Bluetooth 5.0 (up to 10m) Output USB 1 (playback from flash): 5V=1.5A Output USB 2 (charging / QC3.0): 5V=3A, 9V=2A, 12V=1.5A (18W Maximum) 12-24V Support: A2DP / Avrcp FM transmitter allows you to listen to favorite radio stations at frequencies from 87.5 - 108 MHz Support for USB flash drives / TF card: up to 32 Gb Supported formats: MP3 / WAV / WMA LED display Built-in microphone for establishing voice communication through car acoustics Buttons: accept/reject call; next/previous song; next/previous station Material: ABS Size: 74*37*36mm Weight: 31g