Vox Amplug 2 Clean, Compact Headphone Amplifier, Integrated 6.3 mm jack for direct connection to the electric guitar, Headphone jack 3.5 mm, Aux-in for MP3 players, Controls: Chorus / Delay / Reverb, Operating time: up to 15 hours with 2 x AAA batteries (included), Also suitable for diagonal jack sockets on ST-Style guitars, Dimensions (W x H x D): 86 x 31 x 80 mm, Weight: 40 g