1, Bluetooth: BT5.4 2, built-in polymer lithium battery 3.7V, 400mAh 3, transmission distance: 10M 4. Music sharing: Music sharing and intercom exist simultaneously 5, light mode: support light off and on 6. Standby time: 270 hours 7, talk time: 25 hours 8, AI voice assistant: Support 9, waterproof level: IP56 10, split installation (back clamp and host can be separated) 11, support simultaneous connection of two mobile phones 12, automatic call answer (can switch manual mode)