This is the BOSS SE-50, a half-rack size multi-effects processor. Ideal for guitar, bass, keyboards, vocals, and PA systems. Enjoy authentic multi-effects sounds including reverb, delay, chorus, pitch shifter, flanger, phaser, vocoder, rotary, guitar multi-effects (including distortion), and equalizer. Includes instruction manual and adapter. Operation confirmed. Although the battery is not low, please refrain from purchasing if you are sensitive to used items. *We strive for prompt responses, but please understand that the item may be sold on other sites, and we may not be able to fulfill your order if it sells out there first. #BOSS #Boss #SE50 #Rack