1. Automatically answer incoming calls and support hands-free function, making it to ride and more convenient to communicate with friends. 2. With advanced Bluetooth and noise suppression technology, you can enjoy wireless two-channel stereo music experience while riding. 3. Convenient and simple music operation, convenient song switching and volume adjustment during riding. 4. Support to display the power status from for IOS and Android mobile phones, which is convenient for charging in time. 5. Built-in large-capacity lithium battery, support long-term standby and work. Product parameters: Bluetooth version: V5.0 Frequency: 2.402GHz-2.480GHz Range: 20~30 meters (depending on the surrounding environment of the device such as obstacles, etc.) Microphone transmission distance: 1m Li-ion battery: 3.7V/180mA Playing time: 8 hours Charging voltage: 5V Charging time: 1.5 hours Standby time: 160 hours Colour:black Material:ABS Package Contents: 1 * Helmet Headset Only the above package content, other products are not included. Note: Light 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.