Built-in rechargeable battery, no need of external power supply, enjoy your music anytime anywhere. Supports guitar volume, bass and treble control, as well as microphone volume and echo adjustment, giving you different sound effects. With a strap for carrying the guitar amplifier conveniently by your hand. Specifications: Power: 15W Speaker: 5 Interface: 6.35mm guitar jack, 6.35mm microphone jack Power Supply: Built-in 7.4V 2200mAH Lithium Battery Battery Life: about 5H(80% volume level) Recharge Socket: Micro USB 5V/2A BT Version: 4.2 Item Size: 21.5 16 16.5cm / 8.5 6.3 6.5in Item Weight: 2060g / 4.5lbs Package Size: 26.5 19 19cm / 10.4 7.5 7.5cm Package Weight: 2380g / 5.2lbs Note: Guitar showed in the picture is not included Package List: I3782 1 Amplifier 1 USB Charging Cable 1 Hand Strap 1 Users' Manual(English).This item is in the category "Musical Instruments & Gear\Guitars & Basses\Guitar Amplifiers". The seller is "fansfuny" and is located in this country: CN. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia.