Car mp3 player and charger with Bluetooth SAVIO TR-12 SAVIO TR-12 car transmitter is a multifunctional device equipped with Bluetooth 5.0. Used chipset allows to play stereo music in excellent quality and two USB ports allow to quickly charge the smartphone using Quick Charge 3.0 and Power Delivery technologies. Combination of the hands-free function with a high-class rotary microphone guarantees the best quality during calls. Transmitter is equipped with a 5-step joystick which allows for quick and easy operation, LED display, Bass Boost function and support of Google Assistant and Siri services. Bluetooth version: 5.0Bluetooth protocols suported: AVRCP, HFP, A2DPFrequency range: 87.6 – 107.9 MHzPower supply: 12/24VPower Delivery output voltage: 5V/3A, 9V/2A, 12V/1.5AUSB output voltage (Quick Charge 3.0): 5V/3A, 9V/2A, 12V/1.5ASupported Micro SD card: up to 64 GBSupported audio files formats: MP3, WMA, APE, FLAC, WAVHands Free kit function (built-in microphone)Bass boost function