If you’re tired of low-quality budget earbuds with poor battery and average sound, the Boult K10 might finally end your search.
Marketed under names like Boult Cyborg, GoBoult K10, and Boult Audio AirBass, these earbuds pack premium features under ₹1000 – including quad-mic setup, 55 hours of battery life, 10mm drivers, Bluetooth 5.4, and IPX5 water resistance.

We tested them extensively for a month. Here’s the full Boult K10 review – with pros, cons, and whether they’re worth buying in 2025.

Boult K10 – Quick Specs

Pros & Cons

Pros

• Excellent build quality for the price

• Quad-mic for clear calls

• 55-hour battery backup

• Punchy bass & clean vocals

• IPX5 water resistance

• Comfortable for long use

• Bluetooth 5.4 for stable connection

• Volume control via earbuds

Cons

• No app support for EQ/customization

• ENC is basic, not strong in noisy environments

Build & Design Quality – Solid and Stylish

The Boult K10 case and buds feel sturdy, with no cheap creaks or loose parts. The hinge mechanism clicks firmly, and the magnets hold buds securely even upside down.

The Blue Ice variant’s matte finish with white accents looks premium. The compact design fits easily in a pocket, and the buds have a small stem for better grip and mic positioning.

Rating: 5/5 for build quality.

Comfort & Fit – Gym Friendly

With medium-to-large silicone tips, these earbuds are comfortable for hours of use. During workouts and cardio, they stayed secure, even with sweat. Two extra tip sizes are included for a better fit.

If you prefer half in-ear designs, these might feel bulky – but for in-ear fans, they’re a solid choice.

Rating: 4.5/5 for comfort and grip.

Features & Connectivity – Above Class

Key Features:

• Bluetooth 5.4 for stable pairing and low latency

• Volume control directly on earbuds

• Low latency gaming mode (claimed 45ms)

• Quad-mic setup for better call quality

• IPX5 water resistance for sweat/rain protection

The only missing piece is app support, so you can’t tweak EQ or remap controls.

Rating: 4/5 for features.

Sound Quality – Bass Lovers’ Choice

The 10mm BoomX drivers deliver impressive bass without muddying vocals or treble. Even at max volume, there’s no harsh distortion.

• Bass: Deep, punchy, great for hip-hop & EDM

• Vocals: Clean and natural

• Treble: Crisp with good instrument separation

Volume could be slightly higher compared to BoAt Airdopes, but overall sound quality punches above its price.

Rating: 4.5/5 for sound.

Mic & Call Quality – Realistic Voice

With dual mics per earbud, the K10 handles calls well in most situations. Indoors, voices sound natural with minimal processing. Outdoors, it reduces fan noise but won’t completely cut street sounds.

In crowded spaces like metros, your voice remains clear to the caller.

Rating: 4/5 for calls.

Battery Backup – Truly Marathon

Boult claims 55 hours total battery, and real-world use comes close.

• Light Use (2 hrs/day): Up to 14 days without charging

• Heavy Use (5 hrs/day): About 7 days per charge

• Fast Top-up: 10 minutes in case = 1 hour playtime

Charging takes ~2 hours for the case, which is reasonable for the huge capacity.

Rating: 4.5/5 for battery.

Gaming Performance – Surprisingly Good

In BGMI, COD Mobile, and PC gaming, audio delay was minimal. With low-latency mode on, footsteps and enemy direction cues were easy to catch.

Not eSports grade, but great for casual to mid-level gaming.

Rating: 4/5 for gaming.

Verdict – Should You Buy the Boult K10?

If your budget is under ₹1000 and you want great bass, excellent battery life, solid build, and good call quality, the Boult K10 is one of the best options in 2025.

Skip it only if you need strong ENC for noisy environments or app-based EQ tuning.

Final Rating: 4.4/5

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