Features 1.Bluetooth 5.0 Features: Helmet bluetooth headphones use Bluetooth 5.0 technology standard, stable transmission, wider coverage, faster speed and lower power consumption. 2.Automatic Call Answering: Helmet bluetooth headset answer calls without reaching for the phone, automatically answer incoming calls, safer and more convenient. 3.Three Keys Design: Helmet bluetooth headset is designed with three keys, simple music control and simple dialing, more convenient operation. 4.820mah Rechargeable Battery: The helmet bluetooth headset has a built in 820mAh rechargeable lithium ion battery for long standby time and long working time. 5.Noise Reduction, Clear Calls: With built in noise and back sound cancellation technology, helmet bluetooth headset presents high definition stereo sound effect and clear call with one key. 6.Simple and Beautiful: Bluetooth 5.0 motorcycle helmet headset is compact, simple and elegant, installation is not cumbersome, comfortable hand feeling lacquered shell. specificationItem Type: Helmet Bluetooth Headset Material: ABS Model: BT22 Color: Black Battery Type: Built in 820mAh Lithium Battery (included) Bluetooth Version: 5.0 Frequency: 2.402-2.480GHz Bluetooth Range: 20-30m/65.6-98.4ft PackageList 1 x Helmet Bluetooth Headset 1 x Headset Controller 1 x Charging Cable 1 x Manual