Compact guitar amplifier with USB audio player function. - Model Name: eBand JS-10 - Function: USB audio player - Supported formats: MP3, WAV - Input terminals: Guitar input, AUX input - Speaker: Built-in speaker - Power supply: AC adapter - Size: Compact design This is a guitar amplifier for home practice. Please check BOSS product information for details. It can do quite a lot, so it's quite good for practicing at home. Includes the main unit, power cable, USB cable to connect to a PC, and an SD card. The SD card contains music data, so please delete it before use. Missing items: The cover above the SD card slot was removed because it was in the way. The metal cover is present, but the screws are missing. Also, the manual is missing. Operation has been confirmed.