Description:<br /><br />Compact and light-weight design｣ｬ easy to carry.<br />Built-in distortion effect.<br />Designed with 3 adjuster: Level｣ｬ tone｣ｬ gain.<br />0.25in plug｣ｬ just plug into guitar jack｣ｬ no need of installation.<br />Powered by two AAA 1.5 alkaline batteries<br /><br />Specifications:<br />Color: Black<br />Power: Two AAA 1.5 alkaline batteries<br />Product size: 9.7 * 8.4 * 2.1cm \/ 3.8 * 3.3 * 0.8in<br />Product weight: 44g \/ 1.5oz<br />Package size: 16 * 13 * 2.8cm \/ 6.3 * 5.1 * 1.1<br />Package weight: 77g \/ 2.7oz<br /><br />Notice:Battery is Included<br /><br />Package Included:<br /><br />1 * Guitar Plug Headphone Amp<br />1 * User Manual