With amPlug 2, the crucial analog circuit has been drastically improved and each model now provides three modes. Guitar types provide multi-effect functionality and a rhythm function has been added to the bass type. A foldable plug mechanism that rotates 180 degrees and an auto power-off function are additional features that contribute significantly to improved convenience and ease of use. The amPlug is the simplest way to get serious sound; occupying virtually no space, it's an ideal choice for any guitarist or bassist. Blues The authentic, crunchy blues tone of a cranked tweed amp. Includes: Vox amPlug G2 Blues Headphone Guitar Amp - 2x AAA Alkaline Batteries - Owner's Manual - Vox 1 Year Limited Warranty Specifications: Connections: 1x Headphone Out 1x AUX In Indicator: Mode 1 (Green): Clean Mode 2 (Orange): Crunch Mode 3 (Red): Lead Power Supply: 2x AAA Batteries Battery Life: 11 hours / 17 hours (FX on/FX off, alkaline) 4 hours / 9 hours (FX on/FX off, zinc-carbon) Dimensions (WxDxH): 86 x 38 x 31mm (3.39 x 1.50 x 1.22 ) (with the plug in the storage position) Weight: 40g (1.41 oz) (excluding batteries)