Soundcore V40i Black: Open-Ear Earbuds Built for Training and Movement
The Soundcore V40i Black is an open-ear wireless earbud designed for athletes who refuse to shut out the world. Because the speakers sit just outside your ear canal, you hear approaching traffic, a training partner, or a coach’s call while your playlist keeps driving the session. For runners, cyclists, and gym-goers who treat awareness as a safety feature, the V40i Black pairs movement-ready durability with punchy sound.
This open-ear headphone set targets a clear pain point. Traditional in-ear buds seal you off and pile pressure into the ear canal during long efforts. The Soundcore V40i Black removes that pressure entirely, so a two-hour ride or a tempo run never turns into ear fatigue. Additionally, the matte black finish hides scuffs and sweat marks that show quickly on lighter shells, which matters when the buds live in a kit bag
Technical Specifications
Audio
| Specification | Detail |
|---|---|
| Driver unit | 16 x 13 mm customised racetrack driver |
| Frequency response | 20 Hz – 20 kHz |
| Impedance | 16 Ω |
| EQ presets | 22 presets via the soundcore app |
| Bass boost | Up to 7.5 dB over non-adjustable hooks (soundcore lab data) |
| Active noise cancelling | None (open-ear design) |
Connectivity
| Specification | Detail |
|---|---|
| Bluetooth version | 5.4 |
| Wireless range | Up to 10 m (33 ft) |
| Multipoint | Dual Connection to two devices |
| Microphones | 4 with AI noise reduction |
| Controls | Customisable touch (tap and tap-and-hold) |
Battery and Charging
| Specification | Detail |
|---|---|
| Earbud playtime | Up to 6 hours per charge |
| Total with case | Up to 21 hours |
| Fast charge | 10 minutes for 1.5 hours of playtime |
| Earbud battery | 60 mAh x2 |
| Case battery | 470 mAh |
| Charging time | 1 hour (earbuds), 2 hours (case) |
| Charging port | USB-C |
Physical and Durability
| Specification | Detail |
|---|---|
| Form factor | Open-ear with adjustable ear hooks |
| Water resistance | IP55 (earbuds); case not rated |
| Sweat protection | SweatGuard coating |
| Case design | Lidless clear case with magnets and status light bar |
| Colour | Black |
| Model number | A3878 |
Use Cases and Applications
The Soundcore V40i Black fits training that demands awareness. Runners on shared paths hear cyclists and cars approaching from behind. Cyclists keep both ears open for road noise while still getting a beat to pace by. Furthermore, gym users can hear a spotter or a class instructor without pulling a bud out mid-set.
Beyond the workout, the open-ear fit works for long days at a desk. You stay reachable for colleagues and notice a knock at the door. The Dual Connection feature also lets the buds hold a link to a laptop and a phone at once. So you can switch from a video call to a podcast without re-pairing.
Considerations Before Buying
Open-ear audio trades isolation for awareness, and that shapes who should buy. In a silent room the buds leak some sound, so they suit shared and outdoor spaces more than a quiet library. The V40i Black also has no active noise cancelling, which means flights and loud commutes will let ambient noise through. Additionally, the charging case carries no water rating, so keep it dry even though the earbuds shrug off sweat. Finally, the buds skip wireless charging and rely on USB-C, though the included fast charge covers quick top-ups.
Frequently Asked Questions
Will the Soundcore V40i Black stay in during running?
Yes. The 4-level adjustable ear hooks wrap behind the ear and hold through running and high-impact training. You can rotate the hooks to fine-tune the grip for your ear shape.
How long does the battery last?
The earbuds run up to 6 hours per charge. The lidless case adds enough for 21 hours total. A 10-minute fast charge returns roughly 1.5 hours of playtime.
Does the V40i Black have noise cancelling?
No. The open-ear design deliberately keeps you aware of your surroundings, so it does not include active noise cancelling. Choose closed in-ear buds if you want isolation.
Is the Soundcore V40i Black waterproof?
The earbuds carry an IP55 rating for dust and water resistance, backed by SweatGuard. However, the charging case has no water rating, so store it somewhere dry.
Can it connect to two devices at once?
Yes. Dual Connection over Bluetooth 5.4 links the V40i Black to two devices together. You can move between a phone and a laptop without manual re-pairing.
Related Products
Read more on the official Soundcore V40i open-ear earbuds page.


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