Bluetooth FM Transmitter for Car Bluetooth Car Adapter with Dual USB Charging Car Charger MP3 Player Support USB Disk Hands Free Calling Feature: Product Name: Car charging car MP3 Bluetooth player Product color: Red Power supply: DC5V Output current: 3.1A Transmission frequency: 87.5mhz-108.0MHZ Applicable models: 12 V -24V vehicles Rated working voltage: 12 V -24V Working voltage: 8-32v Usb1 output5V/1A Usb2 output5V/2.1A Bluetooth version: version 5.0 Bluetooth transmission distance: less than 10m Product size:3.39x2.03x1.79in Packing size:4.33x3.03x2.16in Gross weight: 0.12lbs Description: [HANDSFREE BLUETOOTH TRANSMITTER] Connect cellphone and this Bluetooth adapter via Bluetooth, One-click the button to redial/hang up or reject calls. Built-in microphones and noise suppression tech for clearer Hands-Free Call. You can keep your eyes on the road making your driving more interesting and safe. [DUALUSB CHARGER] Install 12v/24v automobile socket. This car charging can quickly charge two devices at the same time through dual USB ports. Quick charging doesn't hurt the phone Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, it will effectively ensure safe charging. [MUSIC ADAPTER & PLAYER] Connect car radio and this Bluetooth adapter via the FM channel. Then you can enjoy music from Bluetooth devices /USB flash drive(32GB) to the car stereo. [SMART BLUETOOTH 5.0] Smart Bluetooth 5.0 new generation chip has speed, constant temperature and steady current charging, harm-less charging and safer charging [SAFE TO USE] Built-in over-current protection, over-voltage protection, short circuit protection, effectively prevents multiple problems. Package Included: 1X Car MP3 Bluetooth player 1X Instructions