Feature 1Multifunctional: Wireless helmet headphone support all phones with bluetooth, provide automatic answering, play control, voice prompt. 2Bluetooth5.0: Motorcycle helmet bluetooth headset adopted the latest Bluetooth 5.0 chip, provide super strong signal output and ultra low power consumption. 3Clear Sound: Helmet bluetooth5.0 headset driving unit uses excellent horn, which can provide strong bass, clear middle voice, and crisp treble. 4Waterproof Coating: Hands free helmet headset outer adopted waterproof design, with nano coating, which is not afraid of rain and snow, bring you much convenient. 5Long Standby: Bluetooth headset comes with a 1000mAh rechargeable lithium ion battery, charging time is less than 5 hours, standby time is about 240h.SpecificationItem Type: Motorcycle Helmet HeadsetMaterial: ABSBluetooth Version: 5.0Frequency Range: 2.402GHz-2.480GHzBluetooth Distance: Approx. 10-15m/ 32.8-49.2ft (Varies by Mobile Phone)Microphone Transmission Distance: Approx. less than 1mBattery Type: Lithium Battery 3.7V / 1000mAhEndurance: Less than 15-20 hoursCharging Voltage: 5VCharging Time: Less than 5 hoursStandby Time: Less than 240 hoursBluetooh Name: BT22B .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x MotorcycleBluetoothHeadset1 x Microphone1 x Cable5 x Accessories1 x Manual