Specifications: The car charger supports FM full frequency point 87.5MHZ - 108MHZ. It supports automatic power-off memory channel. It also supports (USB1+USB2) 2.4A charging. This product supports LCD dot matrix screen display. It supports U disk, TF card music playback. It supports bluetooth-compatible answer, reject, hang up, redial and other functions. It supports U disk, TF card capacity maximum support 32G (IF Card and U Disk Are Not Included) Item Name: Car Charger Material: ABS, Metal Working Voltage: 12V - 24V USB Output: 5V / 2.4A Working Temperature: < 60 Degrees Music Format: MP3, WMA, WAV Bluetooth Version 4.1 FM Transmission Frequency: 87.5MHz - 108 MHz Effective Call Distance: 0.5 - 2m / 1.64 - 6.56ft Bluetooth Effective Distance: Less Than 10m / 32.8ft LCD Resolution: 128 x 64 (1.8 inch) Features: Multifunctional, Durable, Simple Operation Size: 7cm x 6.4cm x 5cm/2.76" x 2.52" x 1.97" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Car Charger 1 x User Manual 1 x 3.5mm Audio Cable