Speaker: none Output power: 0.7V-18mW/32 ohm earphone Frequency response: 100HZ-18KHZ (+/-3dB) Disc format: DVD/CD/MP3/WMA format Power supply voltage: DC-5V-2AUSB power supply Audio interface: 3.5mm stereo plug for Bluetooth-compatible version: none for -compatible interface: yes USB function: yes Play mode: DVD/USB playback Remote control: yes Key operation: yes Transmission distance: 5m (10m in a straight line without obstacles) Signal-to-noise ratio: equal 65db Colour:black Material:plastic Size:15.1X15.1X28.5CM Package Contents: 1 x DVD Player 1 x Remote Control 1 x -compatible Cable 1 x AV Cable note: without power supply Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.