Item Type: Car Bluetooth FM Transmitter Material: ABS Model: S9 Bluetooth Version: 5.0 Launch Distance: Approx. 5m / 16.4ft Interface: USB2.0x2, Memory Cardx1 Support Memory Card / U Disk Capacity: 32GB(Does Not Contain) Power Supply: DC 12V-24V FM Frequency Range: 87.5-108MHz (100KHz Step) Screen: LED Screen1High quality upgraded Bluetooth FM transmitter, more stable FM signal, enhanced sound experience and built in microphone with noise suppression (CVC) technology, this device will provide you with wonderful music. 2This is a fast charging car transmitter charger, it comes with two USB charging ports, which can charge two devices at the same time, with better charging performance. 3Connect the car radio and Bluetooth adapter through the FM modulator channel. Then you can enjoy music from Bluetooth device, memory card, U disk to car stereo. 4Suitable for 12V/24V car cigarette lighter socket. Widely compatible with any 12?24 V vehicle. This is a good choice, especially if your old car does not have a built in Bluetooth audio player system. 5Hands free call function, connect the mobile phone and Bluetooth adapter via Bluetooth, one key answer, redial, hang up or reject the call. You can focus on the road to make your driving more interesting and safer.Please allow 0?0.1m / 0?0.33ft error due to manual measurement. Thanks for your understanding. 1 x Car Bluetooth FM Transmitter 1 x Manual