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Haylou S40 Facts: 174 Specifications & 132 Highlights

Real users on Soundfindr looked at 174 specs & features of the Haylou S40 headphone — and general information, dimensions & weight, materials & build & audio performance topped the charts.

70 Points
Haylou S40

Highlights 132

No extras. Just what matters.
70 Points

Why is Haylou S40 better than other headphones ?

General Information

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Dimensions & Weight

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Materials & Build

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Audio Performance

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Connectivity & Compatibility

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Controls & Features

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Microphone & Calling

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Noise Control

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Battery & Power

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Smart & Extra Features

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Accessories

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Quick Take

The essentials that matter—nothing extra

A fast snapshot of the Haylou S40, covering its standout specification and what you can expect right out of the box.

Haylou S40
Haylou S40

Haylou S40 provides immersive wireless sound with enhanced bass and clear vocals for music lovers on the move. Its long battery life and lightweight design make it perfect for daily commutes and workouts.

Specifications & Facts 174

Specs measured. Drama avoided.

Is the Haylou S40 worth it? Compare its 174 specs — including the well-loved general information, dimensions & weight, materials & build & audio performance — plus price and performance vs other headphones.

General Information 15

Haylou S40 Headphone Type

What type of headphones are these?

49 Haylou S40 0 Votes Over Ear

14 Headphones in this range Over Ear

Haylou S40
Haylou S40

This is an Over Ear design that fully encloses the ear, improving passive isolation and long-wear comfort.

The general type of headphones.

Haylou S40 Release Year

What is the release year?

99 Haylou S40 0 Votes 2025

23 Headphones in this range 2025

Haylou S40
Haylou S40

Release year is 2025, indicating a recent model with up-to-date features and likely current firmware support.

Year the headphones were first released.

Haylou S40 Detachable Cable

Does it have a detachable cable?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. The cable is detachable, making it easy to replace if damaged or to swap for different cable types for portability.

Cable can be detached for replacement or portability.

Haylou S40 Replaceable Cable

Is the cable replaceable?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. The cable is replaceable, allowing straightforward swaps for upgrades or repairs without replacing the entire headset.

Indicates if cable can be replaced with another.

Haylou S40 Certification Standard

What certifications are included?

74 Haylou S40 0 Votes CE, FCC, RoHS

22 Headphones in this range CE, FCC, RoHS

Haylou S40
Haylou S40

The product lists certifications CE, FCC, and RoHS, indicating compliance with relevant European safety, U.S. communications, and hazardous-substance restrictions.

Compliance standards product meets.

Haylou S40 Warranty Period

What is the warranty period?

29 Haylou S40 0 Votes 1 Year

12 Headphones in this range 2 Years

Haylou S40
Haylou S40

The product comes with a 1 Year warranty that covers manufacturing defects under normal use.

Duration of manufacturer’s warranty.

Dimensions & Weight 19

Haylou S40 Depth

What is the depth of the headphones?

3.26 inch 0Votes
Haylou S40
4.06 inch (Average)

Haylou S40
Haylou S40

Overall depth is 3.26 inch, equal to about 8.28 cm, which helps assess storage footprint and fit when carried.

Front-to-back measurement of the headphones.

Haylou S40 Package Depth

What is the package depth?

5.91 inch 0Votes
Haylou S40
4.93 inch (Average)

Haylou S40
Haylou S40

Package depth is 5.91 inch and converts to approximately 15.01 cm, giving a compact depth for storage or packing.

Depth of the retail package.

Haylou S40 Package Weight

What is the package weight?

1.85 lbs 0Votes
Haylou S40
1.09 lbs (Average)

Haylou S40
Haylou S40

Package weight is 1.85 lbs, which is approximately 0.84 kg, useful to know for shipping and luggage allowance.

Total weight including packaging.

Haylou S40 Weight

What is the headphone weight?

0.77 lbs 0Votes
Haylou S40
0.6 lbs (Average)

Overall headphone weight without packaging.

Haylou S40 Width

What is the width of the headphones?

7.68 inch 0Votes
Haylou S40
6.2 inch (Average)

Overall horizontal measurement of the headphones.

Haylou S40 Height

What is the height of the headphones?

6.81 inch 0Votes
Haylou S40
6.52 inch (Average)

Vertical measurement from top to bottom.

Materials & Build 16

Haylou S40 Cable Material

What is the cable material?

59 Haylou S40 0 Votes TPE

14 Headphones in this range Rubber

Haylou S40
Haylou S40

Cable material is TPE, a flexible thermoplastic elastomer that balances durability and tangle resistance for everyday use.

Construction material of the audio cable.

Haylou S40 Connector Material

What is the connector material?

89 Haylou S40 0 Votes Gold Plated

23 Headphones in this range Gold Plated

Haylou S40
Haylou S40

Connector material is Gold Plated, which helps resist corrosion and maintain reliable electrical contact over time.

Metal used for plug connectors.

Haylou S40 Reinforced Joints

Do the headphones have reinforced joints?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Reinforced joints provide greater durability at folding points and hinge areas, improving long-term robustness.

Indicates if stress points are reinforced for durability.

Haylou S40 Material

What is the main material of the headphones?

69 Haylou S40 0 Votes Plastic

22 Headphones in this range Plastic

Primary construction material of the headphones.

Haylou S40 Color Options

What are the color options?

69 Haylou S40 0 Votes Black, White

21 Headphones in this range Black

Available colors for the headphones.

Haylou S40 Ear Cushion Material

What is the ear cushion material?

79 Haylou S40 0 Votes Memory Foam

19 Headphones in this range Leather

Material of ear cushions that affects comfort and breathability.

Audio Performance 21

Haylou S40 Total Harmonic Distortion

What is the THD?

0.5 % 0Votes
Haylou S40
1.9 % (Average)

Haylou S40
Haylou S40

Total harmonic distortion is 0.5%, which is low enough for clean consumer audio reproduction and indicates minimal audible distortion at typical listening levels.

Distortion in audio output.

Haylou S40 Sensitivity

What is the sensitivity?

97 dB 0Votes
Haylou S40
97.91 dB (Average)

Loudness produced per given input power.

Haylou S40 Driver Type

What is the driver type?

59 Haylou S40 0 Votes Dynamic

18 Headphones in this range Dynamic

Type of driver technology used for sound production.

Haylou S40 Driver Size

What is the driver size?

40 mm 0Votes
Haylou S40
40.92 mm (Average)

Diameter of the driver unit.

Haylou S40 Acoustic Design

What is the acoustic design?

29 Haylou S40 0 Votes Closed Back

9 Headphones in this range Closed Back

Headphone enclosure type.

Haylou S40 Low Frequency Response

What is the lowest frequency response?

20 Hz 0Votes
Haylou S40
18.35 Hz (Average)

Lowest audible frequency reproduced.

Connectivity & Compatibility 17

Haylou S40 Connection Type

What is the connection type?

19 Haylou S40 0 Votes Wired

11 Headphones in this range Wired

Haylou S40
Haylou S40

Connection type is Wired, meaning audio is delivered via a physical cable which can provide stable, high-quality signal transmission.

Defines whether headphones connect via cable, wireless, or both.

Haylou S40 Low Latency Support

Do the headphones support low latency mode?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. The headphones support low-latency operation or modes intended to reduce audio delay for gaming and video synchronization.

Indicates if headphones reduce latency for gaming and video sync.

Haylou S40 Bluetooth Version

What is the Bluetooth version?

99 Haylou S40 0 Votes 6.0

12 Headphones in this range 5.0

Version of Bluetooth supported.

Haylou S40 Multipoint Connectivity

Do the headphones support multipoint connectivity?

Yes 0Votes Haylou S40

Yes Headphones in this range

Ability to connect to multiple devices simultaneously.

Haylou S40 LDAC Support

Do the headphones support LDAC?

No 0Votes Haylou S40

Yes Headphones in this range

Indicates if headphones support Sony’s LDAC codec.

Haylou S40 Bluetooth Profiles Supported

What Bluetooth profiles are supported?

82 Haylou S40 0 Votes A2DP, AVRCP, HFP

19 Headphones in this range A2DP, AVRCP, HFP, HSP

Bluetooth profiles enabled for different functions.

Controls & Features 17

Haylou S40 Low Latency Mode

Do the headphones support low latency mode?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. A dedicated low-latency mode is supported to minimize audio delay for gaming or real-time applications.

Reduces delay for gaming or video sync.

Haylou S40 Customizable EQ

Do the headphones support customizable EQ?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. A customizable EQ is available to tailor the sound signature via software or an app for personal preference.

Indicates if sound signature can be customized via equalizer.

Haylou S40 Button Feedback Type

What is the button feedback type?

39 Haylou S40 0 Votes Tactile

10 Headphones in this range Tactile

Type of feedback provided when using controls.

Haylou S40 On Device Controls

Do the headphones have on-device controls?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if headphones have physical or touch controls on the unit.

Haylou S40 Auto Pause Play

Do the headphones auto-pause and play?

Yes 0Votes Haylou S40

Yes Headphones in this range

Automatically pauses when removed and resumes when worn.

Haylou S40 Ambient Sound Mode

Do the headphones have ambient sound mode?

Yes 0Votes Haylou S40

Yes Headphones in this range

Lets outside sounds in for awareness.

Microphone & Calling 13

Haylou S40 Built In Microphone

Do the headphones have a built-in microphone?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if the headphones have a built-in microphone.

Haylou S40 Microphone Type

What is the microphone type?

59 Haylou S40 0 Votes Omni Directional

16 Headphones in this range Omni Directional

Type of microphone pickup pattern.

Haylou S40 Microphone Position

What is the microphone position?

79 Haylou S40 0 Votes Integrated

21 Headphones in this range Integrated

Location of microphone on the headphones.

Haylou S40 Noise Cancelling Microphone

Is the microphone noise cancelling?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if microphone has active noise cancelling.

Haylou S40 Number Of Microphones

How many microphones are included?

99 Haylou S40 0 Votes 6

3 Headphones in this range 1

Total microphones used for pickup and processing.

Haylou S40 Detachable Boom Mic

Do the headphones have a detachable boom mic?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if headphones support a detachable boom mic.

Noise Control 10

Haylou S40 Active Noise Cancellation

Do the headphones support active noise cancellation?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Active Noise Cancellation (ANC) actively reduces ambient noise using onboard microphones and processing for quieter listening.

Indicates if the headphones have ANC technology.

Haylou S40 Passive Noise Isolation

Do the headphones provide passive noise isolation?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Passive noise isolation reduces ambient sound through the earcup seal and physical design, improving listening focus without powering ANC.

Physical sealing and padding to block noise.

Haylou S40 Transparency Mode Level Adjustment

Can transparency levels be adjusted?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Users can adjust the transparency (ambient) level, allowing more or less outside sound in depending on preference or environment.

Allows adjustment of transparency mode strength.

Haylou S40 Adaptive Sound Control

Do the headphones feature adaptive sound control?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Adaptive sound control adjusts audio behavior automatically based on detected surroundings or user activity for a more context-aware experience.

Automatically adjusts noise control based on environment.

Haylou S40 Ambient Noise Detection

Do the headphones detect ambient noise?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Ambient noise detection senses environment noise levels to inform features like transparency or ANC adjustments.

Sensors detect surrounding noise levels.

Haylou S40 ANC Microphone Count

How many ANC microphones are used?

99 Haylou S40 0 Votes 5

4 Headphones in this range 2

Number of microphones dedicated to ANC processing.

Battery & Power 15

Haylou S40 Battery Life Playback

How long is playback per charge?

90 hours 0Votes
Haylou S40
40.12 hours (Average)

Haylou S40
Haylou S40

Battery playback time is 90 hours, which is exceptionally long and well-suited for extended travel or multi-day use without frequent charging.

Playback time per charge.

Haylou S40 Charging Time Full

How long is a full charge?

2.5 hours 0Votes
Haylou S40
9.03 hours (Average)

Haylou S40
Haylou S40

Full charging time is about 2.5 hours, which is a relatively quick charge cycle for the battery capacity.

Time for full recharge.

Haylou S40 Replaceable Battery

Is the battery replaceable?

No 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

No. The battery is not user-replaceable, so exchanging the cell will require professional service or authorized repair.

Indicates if the battery can be replaced.

Haylou S40 Charging Connector Type

What is the charging connector type?

89 Haylou S40 0 Votes USB-C

19 Headphones in this range USB-C

The type of connector used for charging.

Haylou S40 Battery Type

What type of battery does it use?

89 Haylou S40 0 Votes Li-ion

20 Headphones in this range Li-ion

The kind of rechargeable battery used.

Haylou S40 Battery Capacity

What is the battery capacity?

650 mAh 0Votes
Haylou S40
543.62 mAh (Average)

Battery capacity rating.

Smart & Extra Features 17

Haylou S40 Hearing Protection Mode

Does it include hearing protection mode?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Hearing protection mode caps sudden volume spikes and can limit maximum output to reduce risk of hearing damage.

Limits volume peaks to protect hearing.

Haylou S40 Sleep Mode Timer

Does it have a sleep mode timer?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. A sleep mode timer lets the headphones power down automatically after inactivity to preserve battery life.

Timer to automatically power off during sleep.

Haylou S40 AI Upscaling Audio

Does it feature AI audio upscaling?

No 0Votes Haylou S40

Yes Headphones in this range

Enhances lower-quality audio using AI algorithms.

Haylou S40 Head Tracking For Spatial Audio

Does it support head tracking for spatial audio?

No 0Votes Haylou S40

Yes Headphones in this range

Supports dynamic spatial audio through head tracking.

Haylou S40 Dolby Atmos Support

Is Dolby Atmos supported?

No 0Votes Haylou S40

Yes Headphones in this range

Indicates Dolby Atmos surround compatibility.

Haylou S40 Hi Res Audio Certification

Is it Hi-Res certified?

No 0Votes Haylou S40

Yes Headphones in this range

Shows if headphones meet Hi-Res audio standards.

Accessories 14

Haylou S40 Extra Earpads

Are extra earpads included?

Yes 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

Yes. Extra earpads are included, providing spares for wear or replacement to extend usable life and comfort.

Indicates if spare earpads are provided.

Haylou S40 Airplane Adapter

Is an airplane adapter included?

No 0Votes Haylou S40

Yes Headphones in this range

Haylou S40
Haylou S40

No. An airplane (dual-prong) adapter is not included in the package; bring a separate adapter if required for in-flight entertainment systems.

Indicates if an airplane adapter is included.

Haylou S40 Carry Case

Is a carry case included?

Yes 0Votes Haylou S40

Yes Headphones in this range

Whether a carry case is bundled with the headphones.

Haylou S40 User Manual

Is a user manual included?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if a user manual is provided.

Haylou S40 Warranty Card

Is a warranty card included?

Yes 0Votes Haylou S40

Yes Headphones in this range

Indicates if a warranty card is provided.

Haylou S40 Carrying Case Type

What type of carrying case is included?

69 Haylou S40 0 Votes Soft Case

6 Headphones in this range None

The type of carrying case included.

Surveys

Because hot takes deserve votes.

Haylou S40 Sound Quality

How would you rate the overall sound quality of these headphones?

Excellent — Clear, balanced, and immersive sound 0Votes
Very good — Great clarity with rich tones 0Votes
Decent — Clear mids but limited depth 0Votes
Average — Lacks detail or balance 0Votes
Poor — Muffled or distorted sound 0Votes

Haylou S40 Bass Performance

How strong and accurate is the bass performance on these headphones?

Powerful — Deep and clean low-end 0Votes
Strong — Noticeable and satisfying bass 0Votes
Balanced — Good mix of lows and highs 0Votes
Weak — Light or flat bass response 0Votes
Poor — No real bass presence 0Votes

Haylou S40 Comfort and Fit

How comfortable do these headphones feel during long listening sessions?

Extremely comfortable — Feels weightless for hours 0Votes
Comfortable — Slight pressure after long use 0Votes
Average — Fine for short periods 0Votes
Tight — Uncomfortable after an hour or two 0Votes
Unpleasant — Difficult to wear for long 0Votes

Haylou S40 Noise Cancellation

How effective is the noise cancellation feature on these headphones?

Excellent — Blocks over 90% of external noise 0Votes
Good — Reduces most background sounds 0Votes
Fair — Works in moderate noise only 0Votes
Weak — Minimal difference noticed 0Votes
Poor — Hardly blocks any noise 0Votes

Haylou S40 Battery Life

How long does the battery last on a full charge?

Excellent — Over 40 hours 0Votes
Good — 30 to 40 hours 0Votes
Average — 20 to 30 hours 0Votes
Short — 10 to 20 hours 0Votes
Very short — Under 10 hours 0Votes

Haylou S40 Build Quality and Durability

How durable and sturdy do these headphones feel?

Very durable — Lasts over 5 years 0Votes
Solid — Feels high-quality and strong 0Votes
Decent — Works fine but not rugged 0Votes
Weak — Shows wear within a year 0Votes
Fragile — Breaks or cracks easily 0Votes

Haylou S40 Connectivity

How smooth and reliable is the Bluetooth or wired connection of these headphones?

Excellent — Connects instantly, never drops 0Votes
Good — Stable with rare issues 0Votes
Decent — Occasional lag or delay 0Votes
Weak — Disconnects sometimes 0Votes
Poor — Frequently loses connection 0Votes

Haylou S40 Design and Style

How stylish and appealing do these headphones look?

Very stylish — Modern and premium design 0Votes
Attractive — Clean and sleek look 0Votes
Decent — Looks fine but simple 0Votes
Basic — Functional but plain 0Votes
Unappealing — Bulky or outdated design 0Votes

Haylou S40 Portability

How easy is it to carry and store these headphones when not in use?

Very portable — Folds compactly and lightweight 0Votes
Easy to carry — Compact with carrying case 0Votes
Manageable — Moderate size and weight 0Votes
Bulky — Hard to pack in small bags 0Votes
Very bulky — Difficult to travel with 0Votes

Haylou S40 Pricing

How would you describe the price of these headphones for their sound and features?

Great value for money 0Votes
Pretty good price 0Votes
Fair deal 0Votes
Kinda pricey 0Votes
Crazy expensive 0Votes

Guides 1

Yes, we brought proof.

Articles 1

Haylou S40 Manual

Haylou S40 Manual

device.report
device.report

Reviews 0

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