Features: 5W guitar amplifier, compact size design, super lightweight and portable, easy to carry around when you go for a travel. With volume and tone adjusting knobs, and supports overdrive function, giving you excellent and various sound effect. The 6.35mm(1/4 inch) and 3.5mm inputs for connecting acoustic guitar, electric guitar and other musical instruments or device. And the 6.35mm output allows you to connect headphones to practice your guitar without bothering your neighbors. Dual power supply: 1 * 9V battery or DC 9V power adapter(both are not included), suitable for indoor and outdoor use. With shoulder strap and backside clip, convenient to carry the amplifier when play the guitar on the move. Specifications: Color: Black/ Blue/ Red/ Orange/ Yellow(optional) Power: 5W Item Size: 12.7 * 6 * 12.5cm / 5 * 2.4 * 4.9in Item Weight: 356g / 12.6oz Package Size: 14.5 * 14 * 8.2cm / 5.70 * 5.51 * 3.22in Package Weight: 380.02g / 13.40oz Note: The guitar showed in the picture is not included.