Vox Amplug 2 Bass, Compact headphone amplifier for electric bass, Version: Bass, 9 x Integrated rhythm patterns, Integrated 6.3 mm jack for direct connection onto the bass, 3.5 mm Headphone connector, Aux in for MP3 players, Foldable plug, Operational life: Up to 15 hours with 2x AAA batteries (not included), Dimensions (W x H x D): 86 x 31 x 80 mm, Weight: 40 g