CP0282P Features Supports TF/ Micro SD card， FM radio and USB flash drive Solid aluminum construction Stereo sound effect Features a USB port， DC power port， 3.5 mm audio port， TF card slot Compact size for ease of carrying General Specs Brand & Model C-36   Material Aluminum alloy Output Power RMS 3W x 2 THD=10% S/N Ratio >85dB Frequency Range 150-18000Hz Output Jack 3.5 mm audio jack Other Output USB 2.0 Card Reader Supports TF/ Micro SD card U-disk Supported Yes Battery Rechargeable 600mAh lithium battery Working Time Up to 3 hours Input DC 5V Additional Function Built-in FM radio Compatibility Cell phones， MP3/ MP4 players， PCs etc. Dimensions 50 x 50 x 50 mm