Mainly used in car scenarios, using the latest Bluetooth 5.4 technology and FM tuning technology, easy to enjoy wireless music in the car. [Bluetooth 5.4] true wireless, plug and play, enjoy anytime, anywhere, no cable, upgrade Bluetooth signal is stronger. [Strong Signal] Effective distance: within 10 meters, strong signal, no delay. [Incoming Call] Enjoy the call anytime and anywhere, answer or hang up. USB port is used for power supply. Bluetooth version: V5.4 Operating voltage: 5V/1A Transmission distance: 10m Connection: mobile phone, tablet Bluetooth connection Key support: FM FM/play/pause/answer the phone FM channels: 87.5,95.0,103.0 Material: ABS Power supply: USB Colour:Black Package Contents: 1 x Bluetooth Aadapter 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.