Description: Product introduction: 1. This product is a car-specific Bluetooth car MP3 player, using high-performance professional-grade Bluetooth module, MP3 decoder chip. 2. Ability to play music files inside the TF card and transmit them to the car stereo via FM wireless. 3. You can also transfer the music from your mobile phone to the car audio via Bluetooth connection. 4. You can also use this device as a telephone hands-free system. Free communication during your driving process. 5. This device is transmitted to your car audio by wireless transmission. You don't need to modify your car to enjoy music while you are driving. You can use the hands-free mobile phone to talk, and the entertainment is safe. 6. This device also has the function of car charger, which can charge your digital products in the car. Specification: *Input voltage: 12-24V *Output voltage: 5 v + - -0.25 *Output current: 1000mA MAX *Short circuit protection current: 2.4 - 3 *Bluetooth version: V5.0 EDR *Frequency: 20 h ~ 20 KHZ *Sensitivity: -42 dB + 3 db 360 *Voltage: 5 v + -0.5 *Working current: 45mA maximum *Standby current: 25mA maximum *Frequency: 2.402 ~ 2.480 ghz *Effective distance: 5 meters *Sensitivity: -92 dBm *RF output: 4 dBm *Frequency: 87.5MHz - 108.0MHz *Transmit power: 87 dBuv 107 dBuv *Effective distance: 2 meters Product weight: 75g Product size: 14*4.5*9.5CM Product package size: 16x12.5x5.5CM Specifications: Features: new and high quality. An In-car FM transmitter stream music from your phone, tablet, MP3, MP4, TF card, even USB flash disk to the car stereo system. enjoy music on the go. With FM signal, can play music from your Bluetooth enabled audio devices car stere