40mm diameter high quality speakers Compatible with for Android, , and Hongmeng Parameter: 1. Qualcomm chip: Bluetooth 5.0 2. Built-in polymer lithium battery 3.7V 3. Battery: 1000mAh 4. Two-person intercom, intercom distance 800M (can be adapted to third parties) 5. Can be adapted to ordinary Bluetooth headset intercom (intercom distance 10-50 meters) 6. noise reduction, clear calls at 100 7. Dual-mode coexistence, in intercom mode, incoming calls will be answered first 8. Transmission distance: 10M 9. Standby time: 300 hours 10. Talk time: 25 hours; intercom time: 15 hours 11. AI voice assistant: support 12. Waterproof level: IPX6 13. Ambient light: supports turning on and off 14. Supports connecting two mobile phones at the same time 15. Automatically answer incoming calls (manual mode can be switched) 16. The boot voice defaults to Chinese and English. Material: plastic colour: As Shown Package Contents: 1 x Motorcycle bluetooth headset Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.