Product Name: Car MP3 Player with FM TransmitterModel Number: Hf122Place of Origin: ChinaFeatures: 1) You can enjoy high quality music not need modify anything in your car 2) Supports the USB flash disk device (version 1.1 or 2.0) 3) Supports auto search and play (MP3 / WMA / WAV files) for whole disk 4) Three buttons with six functions 5) Supports play points memorization Specifications: 1) Antenna: internal/external 2) Power: car lighter 3) External: 12V~24V 4) Displays: power LED, Play-and-Pause LED 5) Audio out: stereo FM out 6) Frequency lock: PLL 7) 14 frequency points (MHZ): 87.7 ~107.7 8) Product size: 84mm (Length) x 35mm (Width) x 22mm (Thickness) 9) Environmental operating ranges: operation temperature range -10 ~ +60oC 10) Power dissipation: max. power dissipation 1.2W LED indication: 1) Red light on: power on 2) Red and blue light on: playing MP3 music