Fangrui Product Details Description: Support Lossless Audio Playback, Built-in High-definition Microphone Noise Reduction, Support Flac, Ape, Wav And Other Lossless Audio Formats. U Disk Play, Insert And Play, Bluetooth Mp3 Frequency And Car Radio Frequency Adjustment. Two Mobile Phones Can Be Connected At The Same Time. Real-time Monitoring Of Battery Voltage, Digital Display, Clear At A Glance. Specification Net Weight: 32g Colour: Black Size: 100*65*38mm Material: Abs Rated Working Voltage: 12v-24v Limit Working Voltage: 8-27v Usb Output: Dual Usb Output Maximum 5v/3.4a+qc3.0 Fast Charge Working Temperature: 0-60 Degrees Signal-to-noise Ratio: >60db Distortion: Frequency Response: 20hz-15khz Left And Right Channel Separation: >60db Bluetooth Version: Version4.2+edr Bluetooth Sound Processing: A2dp (advance Audio Distribution Profile) Function Bluetooth Transmission Distance: Less Than 5m Effective Distance Of Bluetooth Microphone: 0.5-2m Fm Transmission Frequency: 87.5-108.0mhz Specifications: 1: Car Bluetooth Fm Transmitter: Transfer The Music Inside The Mobile Phone And U Disk To The Car Audio Player 2: Car Charging: You Can Charge The Phone/ipad Smartly Via The Usb Interface. 3, Bluetooth Car Hands-free: The Phone Can Be Hands-free Calls Through Bluetooth One Button. 4, Car Usb: Can Read U Disk Through The Usb Interface (maximum 32gb) Package Included: 1* Car Bluetooth Fm Transmitter 1* English Manual Notes: Due To The Difference Between Different Monitors, The Pictures May Not Reflect The Actual Color Of The Item. Compare The Detail Sizes With Yours, Please Allow 1-3cm Error, Due To Manual Measurement. Thanks For Your Understandings