Multi-effects unit for guitar with a variety of effects. - Model: MS-50G - Function: Overdrive - Included: Box, Instruction manual - Country of manufacture: China - Design: Japan Thank you for viewing. I purchased this about 3 years ago and used it indoors for about six months, after which I stored it carefully. The surface is clean, but there are scratches and dirt on the sides and bottom. Please refrain from purchasing if you are sensitive to these details.