Features:<br />electric guitar headphone amplifier with true analog circuit, faithfully simulates the response of original amps.<Br />3.5Mm(1/8 inch) phone jack allows you to play guitar with headphone at high volume but not bothering neighbors.<Br />3.5Mm(1/8 inch) aux input jack lets you enjoy the music you like in your audio player while playing guitar.<Br />features heavy rock distortion effect, with distortion degree(drive) and tone control knobs.<Br />built-in rechargeable battery, supports up to 3-6 hours continuous working time, and with leds showing charging status and remaining power.<Br/>specifications:<br />color: grey/ black(optional)<br />battery: 3.7V 500ma rechargeable battery<br />item size: 8.5 * 8 * 2Cm/ 3.3 * 3.1 * 0.8In<br />item weight: 48g/ 1.7Oz<br />package size: 18 * 13 * 3cm/ 7.1 * 5.1 * 1.2In<br />package weight: 115g/ 4.1Oz<br/>package list:<br />1 * guitar amplifier<br />1 * usb charging cable<br />1 * splitter headphone audio adapter<br />1 * audio cable