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 standby time, 8 hours talk time, 7 hours of music playback 7. Weight: 12 grams
