This is the ZOOM G1X FOUR multi-effects processor. It's a guitar effects processor that lets you enjoy a variety of effects with just one unit. The battery box is unusable due to battery leakage. Some of the corroded terminals have been removed. Operation has been confirmed with an adapter. There are also scratches and rust on the screws on the exterior. For those who don't use batteries, this is a great opportunity to get it at a low price! The serial number peeled off when I removed the Velcro. [Brand] ZOOM [Category] Multi-effects processor [Model Number] G1X FOUR [Color] Black系 (Black-based) This is a sale of the item as is, so please understand that it is a used item before purchasing. Thank you.