Air conduction Bluetooth headsetProduct parameters:*Bluetooth: BK3266*Connection distance: ≥10M*Battery capacity: 120mAh polymer battery*Playing time: ≈5h (80% volume)*Connect standby time: 120 hours*Shutdown standby time: 2000h*Charging time: ≈1.5 hoursProduct selling points:* Open your ears to listen to the world* Protect hearing, safe and healthy* Ecological diaphragm speaker* 6D surround directional sound field* Ultra-light 18g body, suitable for all-day wear* IPX4 sweatproof and waterproof