TurboVS
Boult Audio Fluid X specifications and in-depth review

Boult Audio Fluid X

Manufacturer: Boult Audio

The Boult Audio Fluid X is an over-ear headphone that covers both wireless and wired use cases, making it a versatile option for everyday listening. Weighing 205 g, it features a foldable design and a detachable, tangle-free cable, which adds convenience for commuters and travelers. A 60-hour battery life means extended listening sessions are well within reach, and the USB Type-C charging port brings it up to modern standards.

On the technical side, the Fluid X uses a 40 mm driver unit with a frequency range spanning 20 Hz to 20000 Hz and a sound pressure level of 118 dB/mW, alongside passive noise reduction for blocking out ambient sound. Bluetooth 5.4 handles wireless connectivity with AAC codec support and a quoted audio latency of 50 ms, while the maximum wireless range reaches 10 m. The headset also includes a noise-canceling microphone and an on-device control panel, with a 1.2-hour charge time rounding out its practical feature set.

Pros
  • A 60-hour battery life means the headphones can go days between charges under typical use
  • Charges fully in just 1.2 hours via USB Type-C, minimizing downtime
  • The foldable build and detachable tangle-free cable make it practical to pack and carry
  • IPX5 water resistance provides reliable protection against sweat and light rain
  • The noise-canceling microphone enables clear hands-free calling without a separate device
  • Supports both wireless and wired connections, offering flexibility depending on the situation
Cons
  • No active noise cancellation, so it relies solely on passive isolation to block out environmental sound
  • Limited codec support with only AAC available, as aptX, LDAC, and other high-quality audio codecs are absent
  • Bluetooth range is capped at 10 m, which restricts movement away from the source device
  • No fast pairing or NFC pairing, making the initial connection process less convenient
  • Ambient sound mode is not available, limiting situational awareness when needed
  • No travel bag is included, leaving users to source their own carrying solution
Who is this for?

This headphone suits users who need long listening sessions without frequent recharging, thanks to its 60-hour battery life and quick 1.2-hour charge time via USB Type-C. The IPX5 water resistance and foldable build make it a practical fit for people who use headphones during workouts, commutes, or travel. Those who regularly take calls on the go will also benefit from the noise-canceling microphone and headset functionality, while the dual wireless and wired connectivity gives added flexibility across different devices and scenarios.

Who is this NOT for?

Users who prioritize high-fidelity wireless audio will find this headphone limiting, as it lacks LDAC, aptX, and other advanced codecs beyond AAC. It is also a poor fit for those in consistently noisy environments, since the absence of active noise cancellation means sound isolation depends entirely on the passive seal of the ear cups. Additionally, listeners who value immersive or three-dimensional soundscapes will be disappointed, as spatial audio is not supported.

Design:

Fit Over-ear
weight 205 g
has a detachable cable ✓
Ingress Protection (IP) rating IPX5
water resistance Water resistant
can be folded ✓
is designed for kids ✕
has a tangle free cable ✓
travel bag is included ✕
has an open-back design ✕
has stereo speakers ✓

The Boult Audio Fluid X features an over-ear fit and weighs 205 g, striking a balance between coverage and portability. It adopts a closed-back design with stereo speakers and can be folded for more compact storage when not in use. The headphone comes with a detachable, tangle-free cable, removing the hassle of knots during transport. With an IPX5 water resistance rating, it can handle splashes and light moisture without concern. Notably, no travel bag is included in the package, and the headphone is not designed specifically for children.

Sound quality:

has active noise cancellation (ANC) ✕
lowest frequency 20 Hz
highest frequency 20000 Hz
driver unit size 40 mm
supports spatial audio ✕
sound pressure level 118 dB/mW
has a neodymium magnet ✕
has passive noise reduction ✓

The Boult Audio Fluid X uses a 40 mm driver unit and covers a frequency range of 20 Hz to 20000 Hz, spanning the full extent of standard human hearing. Its sound pressure level sits at 118 dB/mW, indicating a capable output ceiling. The headphone relies on passive noise reduction to limit ambient sound bleed, as it does not include active noise cancellation. Spatial audio is not supported, and the drivers do not use a neodymium magnet.

Power:

Battery life 60 hours
charge time 1.2 hours
Has USB Type-C ✓
has a battery level indicator ✓
has wireless charging ✕
Has a solar power battery ✕
has a rechargeable battery ✓
has a removable battery ✕

The Boult Audio Fluid X is equipped with a rechargeable battery that delivers 60 hours of battery life on a single charge, with a charge time of just 1.2 hours via its USB Type-C port. A battery level indicator is built in, allowing users to keep track of remaining charge at a glance. The battery is not removable, and the headphone does not support wireless charging or solar charging.

Connectivity:

connectivity Wireless & wired
Bluetooth version 5.4
has aptX Adaptive ✕
has aptX ✕
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX Low Latency ✕
has aptX HD ✕
has aptX Lossless ✕
has AAC ✓
has Auracast ✕
audio latency 50 ms
maximum Bluetooth range 10 m
has fast pairing ✕
supports Bluetooth pairing using NFC ✕

The Boult Audio Fluid X supports both wireless and wired connectivity, with the wireless side handled by Bluetooth 5.4 and a maximum range of 10 m. AAC is the sole supported audio codec, as aptX, aptX HD, aptX Adaptive, aptX Low Latency, aptX Lossless, LDAC, and LDHC are all absent. Bluetooth LE Audio and Auracast are likewise not included. Audio latency is quoted at 50 ms, and the headphone does not offer fast pairing or NFC-based pairing for quicker device connections.

Features:

has a noise-canceling microphone ✓
has ambient sound mode ✕
has in/on-ear detection ✕
has a mute function ✕
control panel placed on a device ✓
can be used as a headset ✓
Has an in-line control panel ✕
warranty period 1 years

The Boult Audio Fluid X can function as a headset thanks to its noise-canceling microphone, making it suitable for calls alongside regular listening. Controls are handled through an on-device panel, while an in-line control panel is not included. The headphone lacks ambient sound mode, in/on-ear detection for automatic playback pausing, and a dedicated mute function. It carries a 1-year warranty.

Final Verdict

The Boult Audio Fluid X is a practical over-ear headphone built around endurance and everyday versatility. Its standout attribute is undeniably its 60-hour battery life, paired with fast USB Type-C charging and IPX5 water resistance, which collectively make it well-suited for users with active, on-the-go routines. The noise-canceling microphone and dual wired/wireless connectivity further reinforce its usefulness as an all-around daily driver. That said, the absence of active noise cancellation and the limited codec support mean it will not satisfy audiophiles or those working in demanding acoustic environments. For users whose priorities center on reliability, long battery endurance, and practical build quality rather than premium audio fidelity, the Boult Audio Fluid X delivers a well-rounded set of specifications that align closely with those needs.

Popular Comparisons

Boult Audio Fluid X
Boult Audio Fluid X
VS
boAt Rockerz 650 Pro
boAt Rockerz 650 Pro
Boult Audio Fluid X
Boult Audio Fluid X
VS
Boult Audio Fluid X Pro
Boult Audio Fluid X Pro
Boult Audio Fluid X
Boult Audio Fluid X
VS
JBL Tune 770NC
JBL Tune 770NC