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Boult Audio W35 specifications and in-depth review

Boult Audio W35

Manufacturer: Boult Audio

The Boult Audio W35 are true wireless in-ear earbuds designed for everyday use without the hassle of cables. They carry an IPX5 rating, making them resistant to water splashes, and come packaged with a travel bag for portability. With 40 hours of combined battery life between the earbuds and their charging case, they are built to handle extended listening sessions, and fast charging support means less time waiting to get back to your audio.

On the connectivity side, the W35 uses Bluetooth 5.4 with AAC codec support and delivers audio at a latency of 45 ms over a range of up to 10 meters. The earbuds feature a 10 mm driver unit covering a frequency range of 20 Hz to 20,000 Hz, alongside passive noise isolation. A quad-microphone setup with noise-canceling mic technology handles calls and voice input, while touch controls, voice prompts, a mute function, and a battery level indicator round out the feature set.

Pros
  • Total battery life of 40 hours including the charging case suits extended use without frequent recharging
  • Fast charging support reduces downtime when the earbuds need a top-up
  • Four microphones with noise-canceling mic technology help maintain clearer call quality in noisy environments
  • Bluetooth 5.4 is a recent version, offering a stable wireless connection
  • IPX5 water resistance makes the earbuds suitable for workouts or use in light rain
  • A travel bag is included in the box, adding practical value for users on the move
Cons
  • No active noise cancellation, which limits the ability to block out loud or persistent background noise
  • Wireless charging is not supported, requiring a cable for every recharge
  • No ambient sound mode, making it harder to stay aware of surroundings without removing the earbuds
  • Fast pairing and NFC pairing are absent, making the initial connection process less convenient
  • No in/on-ear detection means music does not pause automatically when an earbud is removed
  • The find device feature is missing, which could be an inconvenience if an earbud is misplaced
Who is this for?

The Boult Audio W35 is a solid fit for everyday listeners who want a wire-free, lightweight listening experience without the bulk of over-ear headphones. Its IPX5 water resistance makes it a practical choice for gym sessions or outdoor commutes where exposure to sweat or light rain is expected. Users who regularly take calls on the go will also find value here, given the four-microphone setup with noise-canceling mic support. The 40-hour combined battery life suits those who prefer to recharge infrequently, and the inclusion of a travel bag adds convenience for users who carry their earbuds between locations daily.

Who is this NOT for?

Users who require active noise cancellation for focused work in loud offices, public transport, or busy environments will find this model lacking, as only passive isolation is available. Audiophiles or those who prioritize high-fidelity wireless audio will be limited by the absence of advanced codecs such as LDAC, aptX HD, or aptX Adaptive, with AAC being the only elevated option beyond standard SBC. Additionally, users who value smart convenience features — such as automatic ear detection to pause playback, ambient sound passthrough, or a find-device function — will need to look elsewhere, as none of these are present on this model.

Design:

Fit In-ear
Ingress Protection (IP) rating IPX5
water resistance Water resistant
has no wires or cables ✓
are neckband earbuds ✕
wingtips included ✕
has RGB lighting ✕
has stereo speakers ✓
has UV light ✕
Has a display ✕

The Boult Audio W35 adopts a true wireless, in-ear design with no cables or neckband, offering a clean and minimal form factor. It carries an IPX5 rating, meaning it can withstand water splashes and is suitable for use in light rain or during workouts. The earbuds deliver stereo sound and do not include wingtips for additional fit support. There is no RGB lighting, UV light, or display present on either the earbuds or the charging case.

Sound quality:

has active noise cancellation (ANC) ✕
has passive noise reduction ✓
driver unit size 10 mm
lowest frequency 20 Hz
highest frequency 20000 Hz
supports spatial audio ✕
has Dolby Atmos ✕
has Dirac Virtuo ✕
has a neodymium magnet ✕

The Boult Audio W35 uses a 10 mm driver unit and covers a frequency range of 20 Hz to 20,000 Hz, spanning the full standard audible spectrum. Passive noise isolation is present, helping to reduce ambient sound through the physical fit of the earbuds, though active noise cancellation is not supported. The earbuds do not include a neodymium magnet, and there is no support for spatial audio, Dolby Atmos, or Dirac Virtuo audio processing.

Power:

Battery life 8 hours
Battery life of charging case 40 hours
charge time 1.5 hours
has wireless charging ✕
Has a solar power battery ✕
has a battery level indicator ✓
has a rechargeable battery ✓

The Boult Audio W35 offers 8 hours of battery life per charge on the earbuds themselves, with the charging case providing an additional 40 hours of total playback time. A full charge takes 1.5 hours, and a battery level indicator is included so users can keep track of remaining power. The battery is rechargeable, while wireless charging and solar power are not supported.

Connectivity:

has fast pairing ✕
Has USB Type-C ✓
Bluetooth version 5.4
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX Adaptive ✕
has aptX Low Latency ✕
has aptX HD ✕
has aptX ✕
has aptX Lossless ✕
audio latency 45 ms
has aptX Voice ✕
has Auracast ✕
maximum Bluetooth range 10 m
supports Bluetooth pairing using NFC ✕
Can be used wirelessly ✓
has AAC ✓

The Boult Audio W35 connects wirelessly via Bluetooth 5.4 and supports the AAC codec, while higher-tier codecs such as LDAC, LDHC, aptX and its variants, and LE Audio are not available. Audio latency is rated at 45 ms, and the maximum Bluetooth range extends to 10 meters. The earbuds charge over USB Type-C, and pairing is done through the standard Bluetooth process, as both fast pairing and NFC pairing are not supported. Auracast broadcast audio is also absent from this model.

Features:

has ambient sound mode ✕
has in/on-ear detection ✕
has find device feature ✕
Supports fast charging ✓
can read notifications ✕
has a mute function ✓
can be used as a headset ✓
control panel placed on a device ✓
Has voice prompts ✓
travel bag is included ✓
Has an in-line control panel ✕
Has a temperature sensor ✕
Has a built-in camera remote control function ✕

The Boult Audio W35 supports fast charging and can function as a headset for calls, with a mute function and voice prompts built in for added convenience during use. Controls are handled through a panel placed on the device itself, while an in-line control panel is not included. A travel bag comes in the box for easy portability. The earbuds do not offer ambient sound mode, in/on-ear detection, a find device feature, notification readout, a body temperature sensor, or a camera remote shutter function.

Microphone:

number of microphones 4
has a noise-canceling microphone ✓

The Boult Audio W35 is equipped with 4 microphones and includes noise-canceling microphone technology, helping to reduce unwanted background sound during calls and voice input.

Final Verdict

The Boult Audio W35 presents itself as a practical set of true wireless earbuds built around everyday usability. With a 40-hour combined battery life, IPX5 water resistance, Bluetooth 5.4, and a four-microphone noise-canceling setup, it covers the fundamentals well for commuters, fitness users, and general daily listeners. It does not cater to those seeking active noise cancellation or high-resolution audio codec support, and the absence of smart features like ear detection or ambient mode keeps it firmly in the essentials-focused segment. For users whose priorities align with reliable wireless performance, solid call quality, and all-day battery endurance, the Boult Audio W35 delivers a coherent and well-rounded package.

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