Thank you for viewing. This is a guitar amplifier. It can also be used as a Bluetooth speaker. I purchased it used, but I haven't used it since. There are no particular problems. It works normally, but it is sold as-is, so no returns or refunds will be accepted. The main unit, power cord, instruction manual, original box, and bonus stickers are included. Feel free to comment. No pets, no smoking. Instant purchase is OK. 【Multi-function Effects】 CYCLOPS is equipped with effects such as MOD, DELAY, and REVERB, allowing you to add a variety of tones to your performance. 【Compact and Easy to Carry】 The small design makes it easy to carry and play anywhere. It can also be battery-powered, making it ideal for outdoor use. 【Various Connection Options】 It has AUX IN and USB ports, making it easy to connect to other devices. It also has a headphone output, which is perfect for practicing in a quiet environment. - Brand: DONNER - Model Name: CYCLOPS - Power: DC 9V or batteries (6 AA batteries) - Connection Ports: AUX IN, USB, Headphone Output - Controls: Volume, Tone, Gain, Drum Volume, Effects (MOD, DELAY, REVERB) - Size: Compact Design Thank you for viewing.