Description: There is an FM chip built into the headset with FM radio function, which supports 87.5-108mhz FM range, so you can search for any channel and listen to the news at any time. Bluetooth-compatible 5.0 chip is used, the product has stable and strong signal, ultra-low power consumption, stereo sound effect and superior performance. Made from ABS, electronic component material, the product is and . The length of the product is 8.6 cm, the width is 2.8 cm, the height is 2 cm. It is very convenient for motorcycle driving, bicycle cycling, snowboarding, skiing, etc. Item Name: Helmet Headset Bluetooth-compatible Version: V5.0 Supported Protocols: A2DP and ACRCP Battery Capacity: 450mAh(Included) Charging Voltage/Current: DV 5V Frequency: 2.402-2.480GHz Charging Time: About 2 Hours Standby: 360 Hours Music Time: 10H Use Time: Less Than or Equal to 10 Hours Use Distance: 10 Meters Waterproof Grade: IPX7 Features: Stable Signal, Easy Operation, Waterproof Material: Plastic colour: black Package Contents: 1 x Wireless Helmet Earphone 1 x USB Cable 1 x english User Manual Only the above package content, other products are not included. Note: Light reflection 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.