Features: 15W portable acoustic guitar amplifier with 5 speaker professional guitar sound output. Equipped with BT wireless play link and microphone input functions you can enjoy fun of listening and singing. Built-in rechargeable battery no need of external supply enjoy your 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 guitar amplifier conveniently by your hand. Specifications: : 15W Speaker: 5 Interface: 6.35mm guitar jack 6.35mm microphone jack Supply: Built-in 7.4V 2200mAH Battery Battery : about 5H(80% volume level) Recharge Socket: 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 picture is not included Package List: 1 * Amplifier 1 * USB Charging Cable 1 * Hand Strap 1 * Users Manual(English)