Boult Z40 Ultra
Launched Mar 2024 · Earbuds (TWS)
Usual price₹999
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Usual price ₹999 · launch price ₹1,999
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Score breakdown
Bassy, decent in Hi-Fi mode; narrow, low volume
Average ANC, weak on voices, slight hiss
About 8 h a bud claimed, big case
Multipoint and game mode, no app, short range
Passable mics; wind gets through
Light, secure fit for workouts
Each part is rated on one scale for every earbud and headphone, from lab test measurements where they exist, what reviewers found, specs and owner reports. It rates the product itself, not how good it is for the price.
Pros
- Hi-Fi mode sounds clear with punchy bass
- Very long battery; case barely drains in two weeks
- Light and fits well
- Quick switching between two devices
- Bass-heavy sound good for rock and movies
- ANC cuts fan and traffic noise reasonably
- Calls better than expected for the price
Cons
- ANC struggles with voices and hisses slightly
- Weak transparency mode
- Calls just passable
- Short Bluetooth range, drops when walking away
- No app
- Mids and treble only fine, narrow stage
- Fairly low maximum volume
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TechPPMar 2024
A feature-packed budget pair with long battery; ANC and transparency are only average and there is no app.
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GizbotMar 2024
Worth a look at Rs 2,000 for strong bass, usable ANC in traffic and decent calls, but sound detail and volume are limited.
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My Mobile IndiaMar 2024
Very positive Indian review calling it a strong budget buy; little criticism beyond missing app and limited soundstage.
Full specs
| Drivers | 10 mm dynamic |
|---|---|
| Codecs | SBC, AAC |
| Hi-Res audio | No |
| Spatial audio | No |
| Equaliser | Presets |
| ANC | Yes, up to 32 dB (maker's figure) |
|---|---|
| Transparency / ambient mode | Yes |
| Earbuds alone | 8 h |
|---|---|
| With the case | 100 h |
| Fast charging | 10 min = 100 min |
| Wireless charging | No |
| Microphones | 4 |
|---|---|
| Call noise reduction | quad-mic ENC (Zen ENC, Prism Voice PLC) |
| Bluetooth | 5.3 |
|---|---|
| Multipoint (two devices at once) | Yes |
| Quick pairing | No |
| Latency / game mode | 45 ms (maker's figure), game mode |
| App | No |
| Water resistance | IPX5 |
|---|---|
| Controls | touch |
| In-ear detection | No |
| Warranty | 1 year |
|---|---|
| Colours | Black, Metallic, Beige |
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