40mm diameter high quality speakersCompatible with for Android, , and HongmengParameter: 1. Qualcomm chip: Bluetooth 5.02. Built-in polymer lithium battery 3.7V3. Battery: 1000mAh4. 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 first8. Transmission distance: 10M9. Standby time: 300 hours10. Talk time: 25 hours; intercom time: 15 hours11. AI voice assistant: support12. Waterproof level: IPX613. Ambient light: supports turning on and off14. Supports connecting two mobile phones at the same time15. Automatically answer incoming calls (manual mode can be switched)16. The boot voice defaults to Chinese and English.Material: plasticcolour: As ShownPackage Contents: 1 x Motorcycle bluetooth headset