Features: Play the songs in the U disk and TF card. Transfer audio and high quality stereo music from the phone to the car stereo via Bluetooth A2DP technology. Support bluetooth hands-free phone calling via its built-in microphone. USB interface can charge a variety of mobile phones, the maximum 1A charging current. Wide voltage supply 12V-24V, suitable for all kinds of voltage cars. Specifications: Material:ABS Color:Black/Pink/Gold/Silver/Rose Gold Rated working voltage: 12~24V Consumption rate: 0.5W Working temperature: -10 to 70 degrees Celsius Frequency response: 20Hz ~ 15Khz Audio format: MP3 Support Bluetooth protocol: HFP/HSP, OPP, A2DP/AVRCP, PBAP Signal to noise ratio: 68dB Bluetooth version: V3.0 EDR Bluetooth transmission distance: 10 ~ 15m FM transmission frequency: 87.5 ~ 108.0Mhz USB fast charge output: 5V/1A Package included: 1pc x Car Bluetooth Receiver Adapter 1pc x Instruction Manual Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement. Tips: 1. Due to signal interference during cell phone call, noise may occur, and the phone needs to maintain a distance of more than 30CM when talking with the product. 2. There is signal interference when usin