1More S51

The open-ear design sits outside your ear canal, allowing ambient sounds like traffic, conversations, or nature to remain audible. This makes them a safer choice for outdoor activities like running or cycling where situational awareness is essential.

Yes, the S51 features a shark-fin design that hooks securely around the ear to prevent them from slipping during vigorous movement. Combined with the lightweight memory titanium alloy construction, they stay stable and comfortable even during intense exercise.

The earbuds carry an IPX5 water-resistance rating, meaning they are protected against sweat and light rain. However, they are not fully waterproof, so you should avoid submerging them in water or wearing them while swimming.

The earbuds provide up to 11 hours of playback on a single charge. When you factor in the additional charges provided by the included case, you get a total of 40 hours of listening time.

No, the 1 More S51 does not feature active noise cancellation. Because they use an open-ear design, they are intended to let sound in rather than block it out.

The headphones support a low-latency mode that keeps lag under 80 ms. This is generally fast enough to keep audio and video synced for casual gaming and streaming.