1. Shark fin triangle ear support, fixed, soft and comfortable
2. Classic Hi-Fi, stereo surround sound
3. Professional IPX4 waterproof and sweatproof
4. No interference, no jam, Bluetooth version 4.2
5. Magnetic absorption nano, automatic adsorption
6. Dual battery life, capacity 110mAh / 3.7V
7. 300 hours standby time, 8 hours talk time, 7 hours of music playback
8. Color: Black