Japan Import Pioneer STEEZ AUDIO STZ-D10Z-R Covered Dock for iPod & iPhone Tempo Control: Ideal for practicing choreography, Tempo Control let's you adjust the tempo of any track without changing pitch. Auto Battle Mode: Automatically create group or 1-on-1 battles on the fly, complete with countdown and voice prompts QVGA 3.5inch LCD AC100V-240V 50Hz/60Hz,DC18V3.5A