Listen to your favorite music on your car stereo Easy to read digital display Convenient to control The last FM frequency memory function Built-in soft light not cause distractions in the car Hands-free call for safe driving 300 mAh rechargeable battery, playback up to 10 hours Effective range: . 15ft Frequency range: 88.1-107.9 MHz Power supply: 300 mAh internal lithium battery that is through the Micro-USB cable Operating time: up to 10 hours (built-in battery) music playback Charging input: 5 V DC Colour: black Material: ABS + PC Size: 62 * 25 * 14 mm Package Contents: 1 * FM Transmitter 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.