Features 3. 1A Dual USB Ports: Two advanced USB ports can simultaneously achieve high-speed charging. 2. Stable transmission: Reliable Bluetooth and connections transfer music directly from the phone to the car's audio system. 3. Bluetooth 5.0&Automatic Connection: Bluetooth 5.0 transmission technology enables fast connection and stable signal. 4. Clear music streaming: You can enjoy the best music on this car music player through Bluetooth/USB flash drive (32GB)/microSD card ( 32GB). 5. Applicable to: universal for cars and trucks (12/24V), supporting commonly used electronic digital devices. Technical parameters: Bluetooth version: Version 5.0 Bluetooth sound processing: equipped with A2DP (Advance Audio Distribution Profile) function Rated working voltage: 12V~24V Extreme working voltage: 9-26V USB port 1 output: 5V/2.1A USB port 2 output: 5V/1A Music format: MP3/WMA/WAV Supports USB/TF card capacity: 1-32G Working temperature: 0-50 degrees Sensitivity: -42dB+/-3DB Working current: 45MA (maximum) Standby current: 25MA (maximum) Frequency: 2.402-2.480GHz Sensitivity: -92dB RF output: 4DBM Battery voltage accuracy: error 1V Signal to noise ratio:>60dB Distortion:<0.1% Frequency response: 20Hz-20Khz Left and right channel separation:>60dB Bluetooth transmission distance: less than 10M Bluetooth microphone effective distance: 0.5-1M FM transmission frequency: 87.5MHz-108.0MHz Specification Material: ABS Color: Black Size: 10 x 7 x 4.6 cm Weight: 56 g Package Include: 1x Fast charging car Bluetooth player