Features:Powerful sound & reliable endurance-enough volume for room and living room practice, with built-in rechargeable battery, 4 hours playtime on a single charge, package included usb charging cable.Two channels,there are two tone channels (cleandistortion). you can choose different tones by adjusting gain-and tone, which is more suitable for playing different styles of music.Innovative design,small size yet huge energy, aux input can be linked to analog audio-and headphone output is suitable for silent-practice,box output can be linked to large guitar box,use scur box head.Package included USB charging cable, or you can use any 5V battery charger(Rated-Output Currrent1A), Nearly all smart-phone chargers-meet this requirement.Small size,small size,it is easy to carry.Specifications:Material:ABS+Circuit BoardNote:Please allow 1-2cm errors due to manual measurement.Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.Package includes:1 Piece Mini Guitar Amp