Features: 5 Sound Effect Options: BBS, Jazz, POP, rock, and sound effect to switch from, it allows you to enjoy the music with you favourite sound effect. 4 Repeat Modes: repeat 1, A-B repeat, repeat all, and order play, perfect for learning or music listening. TF Card Supported: designed with a TF card slot, thus you can download your favourite songs to the TF card and play it via this CD player. Car or Stereo Play: connect the CD player to the car/stereo by the included 3.5mm aux cord. Safety Lock: all the control buttons can be locked to prevent accidentally touch, just switch the HOLD button to the ON position. Dual Power Supply Methods: powered by 2pcs 1.5V batteries(not included), or DC 5V1A USB input via power bank, computer, power adapter, etc. Compact Portable Size: 5.6*1.1 inch small size and 7.2oz light weight, the CD player not occupy too much space at home or car, and it is also easy to carry during traveling. ASP Function: anti-shock system to prevent interruption of CD playback in case of vibration.(it is not recommend using the device while walking or running) Specifications: Color: Black / White (Optional) Material: ABS AC Voltage: 110~220V, 50/60Hz DC Battery: 2 * 1.5V LR06/AM3/AA battery (NOT included) DC USB: 4.5V/5V 600mA Noise Reduction: