Features: 1.Built-in Microphone that supports hands-free calling, safe and convenient for safe driving 2.Noise and wind suppressed by CVC technology to create full duplex sound quality 3.Memory function: It will automatically connect to its memorized paired Bluetooth devices when power on 4.With 3.5mm audio port, it supports AUX input/output 5.With 5V/2.1A USB charging ports, gives you fast and effective charging experience Specification: This product is a well-designed portable multi-media car FM transmitter, It offers you a chance to indulge yourself in music when you are driving a car, and provides perfect sound service to your computers, digital media players, mobile phones and other audio-visual products. Features: Built-in Microphone that supports hands-free calling, safe and convenient for safe driving. Noise and wind suppressed by CVC technology to create full duplex sound quality. Memory function: It will automatically connect to its memorized paired Bluetooth devices when power on. With 3.5mm audio port, it supports AUX input/output. With 5V/2.1A USB charging ports, gives you fast and effective charging experience. Easy Installation, plug and play. Great Bluetooth transmission range. Specifications: Bluetooth Version: V3.0 + EDR Effective Bluetooth Range: 5 meters,the actual transmission distance can reach 10 meters FM Frequency: 87.5MHz - 108.0MHZ Working Voltage: 10V-24V Audio Input/Output: 3.5mm Audio Interface USB Charging Ports: 5V/2.1A Package Weight: approx. 90g Package Included: 1 x FM Transmitter 1 x Audio Cable PackageList: