BOSS DR-110 Dr. Rhythm Graphic Drum Machine. BOSS DR-110 Dr. Rhythm is a compact drum machine introduced in 1983, featuring six analog drum voices and an LCD graphic display for step-programming. It offers 16 preset patterns, 16 user patterns, and two song memories for chaining up to 128 bars. DC 9V power adaptor not included.
Original box. Missing battery cover.

Japan made.