Boult Audio
Boult Audio Z40
₹799
Sony
Sony WF-C500
₹4,030
An in-depth comparison to help you choose the right wireless earbuds for your needs.
Price gap
₹3,231
Score gap
3 pts
Rating gap
0.2
Live Amazon.in prices as of 16/07/2026. Prices and availability may change. Details
Editor's analysis
A hand-written take on how these two compare in the real world.
Sony's audiophile budget pick versus Boult's battery marathon champion. The Sony WF-C500 at Rs 4,030 deliver DSEE upscaling and 5.8mm precision drivers with 20hr battery. The Boult Audio Z40 at Rs 799 offer 10mm drivers, Zen ENC calls, and an astonishing 60hr battery. Sony's battery is one-third of Boult's, and the price is five times higher. If battery and price are your metrics, Boult wins by a landslide. If sound quality is your metric, Sony wins by an equal landslide.
Round by round
How each product stacks up across the key dimensions.
Product A
Boult Audio Z40
4
wins
Product B
Sony WF-C500
2
wins
₹799
₹4,030
4.1 / 5
4.3 / 5
81/100
84/100
Popular
2,876 reviews
10mm Drivers
5.8mm Driver Unit
Up to 60 hours (with case)
Up to 20 hours (with case)
Quick summary
Sony's audiophile budget pick versus Boult's battery marathon champion. The Sony WF-C500 at Rs 4,030 deliver DSEE upscaling and 5.8mm precision drivers with 20hr battery.
The Boult Audio Z40 at Rs 799 offer 60hr of acceptable audio. The Sony WF-C500 at Rs 4,030 offer 20hr of exceptional audio. Most Indian buyers benefit more from 60hr of good-enough sound than 20hr of great sound. Be honest about your priorities.
Side by side
Each pick at a glance, what they include and what they cost.
Boult Audio
Driver Size
10mm Drivers
Battery Life
Up to 60 hours (with case)
Active Noise Cancellation
No ANC (Zen ENC for calls)
Bluetooth Version
5.2
Sony
Driver Size
5.8mm Driver Unit
Battery Life
Up to 20 hours (with case)
Active Noise Cancellation
No ANC
Bluetooth Version
5.0
Live Amazon.in prices as of 16/07/2026. Prices and availability may change. Details
What sets them apart
The decisions you are actually making when you pick one over the other.
The Boult Audio Z40 is 80% more affordable, saving you ₹3,231. This is a significant price gap that could be a deciding factor.
With 4.3 stars from 2,876 reviews, the Sony WF-C500 has stronger customer satisfaction. The large number of reviews makes this rating highly reliable.
The Boult Audio Z40 leads in driver size with 10mm Drivers compared to 5.8mm Driver Unit.
The Boult Audio Z40 leads in battery life with Up to 60 hours (with case) compared to Up to 20 hours (with case).
The Boult Audio Z40 leads in bluetooth version with 5.2 compared to 5.0.
Spec sheet
Side-by-side numbers with subtle highlighting on the stronger value.
| Specification | Boult Audio Z40 | Sony WF-C500 |
|---|---|---|
| Price | ₹799 | ₹4,030 |
| Rating | 4.1 / 5(4,821) | 4.3 / 5(2,876) |
| Driver Size | 10mm Drivers | 5.8mm Driver Unit |
| Battery Life | Up to 60 hours (with case) | Up to 20 hours (with case) |
| Active Noise Cancellation | No ANC (Zen ENC for calls) | No ANC |
| Bluetooth Version | 5.2 | 5.0 |
| Water Resistance | IPX5 | IPX4 |
| Charging Type | USB Type-C Fast Charging | USB Type-C |
| Microphones | Quad Mic with Zen ENC | Built-in Mic |
| Weight | 4.5g per earbud | 5.4g per earbud |
Highlighted cells indicate the stronger value in that row.
Strengths and tradeoffs
Where each pick shines, and where you'll have to compromise.
Decision guide
Pick the one that matches your priorities, not the spec sheet.
Choose
Boult Audio Z40
If you want
Choose
Sony WF-C500
If you want
Buying tip
The Sony WF-C500's 20hr total battery is its biggest weakness in India, where power outages and inconsistent charging access in public spaces make battery endurance critical. If you travel by Indian Railways frequently, the Boult's 60hr battery is not a luxury - it is a practical necessity.
Ready to decide?
Quick answers
Only for dedicated music listeners in quiet environments. The Sony delivers audio quality the Boult cannot approach, but at Rs 4,030 with only 20hr battery and no ANC, it is a specialized product. The Boult at Rs 799 with 60hr battery is a general-purpose workhorse that handles everything acceptably.
The Boult Audio Z40 at 60hr can handle 4-5 days of moderate listening without charging. The Sony WF-C500 at 20hr runs dry in about 2 days. For backpacking trips, hill station vacations, or hostel weekends without reliable charging, the Boult's endurance is unmatched.
The Boult Audio Z40 at Rs 799 is more than sufficient for YouTube shorts, Instagram reels, and casual video content. The Sony's superior audio quality is wasted on compressed social media audio. Save the Rs 3,231 for casual content consumption.