Features:1. Using Bluetooth 5.0 technology standard, wider coverage, faster speed and lower power consumption.2. Thin style, suitable for more helmets, built-in high-quality anti-interference microphone, can effectively realize hands-free answering and hanging up calls. The sound fidelity is high.3. Function: Listening to songs can control up and down music, volume increase and decrease, playback pause, phone automatic callback and other functions, simple operation and convenient use.4. Ultra-long standby: Built-in rechargeable lithium battery, long standby time and long working time. Support to display the battery on the phone.5. This helmet headset transmits clear and high-quality stereo music. Compatible with all smart phones, suitable for outdoor activities such as riding motorcycles, skiing, horseback riding, and cycling. Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurement Description:Channel: stereoHow to use: head-mountedCompatible Bluetooth version: V5.0Frequency range: 2.4026GHz-2.480GHzCharging time: 1 hourStandby time: 360 hoursContinuous working time: 8 hoursCompatible Bluetooth range: 10 meters Depends on the device: The transmission distance varies due to environment and mobile phone Bluetooth devicesThe transmission distance of the microphone: 1mUnilateral headset power: 0.5WLithium battery: 3.7V/250mACharging voltage: 5VFunction: support music, call back, call function, switch between Chinese and English, can answer automaticallySize: 42mm in diameter, 9mm in thickness Package List:1 x Motorcycle Helmet Headset 1 x Charging Cable1 x Manual