1. Wireless design, light and comfortable 2. Superior sound quality, 6mm drive unit 3. IPX4 waterproof and sweatproof 4. Smart one for two, two devices switch at will 5. Dual battery lasting battery life, capacity: 55mAhx2 6. 300 hours of long standby time, 8 hours of talk time, 7 hours of music play time 7. Weight: 12 grams
