Feature:1. ENHANCE SOUND EFFECT: It allows you to enjoy a stronger volume and improved sound quality, even in quiet environments, enabling you to practice and perform to your content.2. COMPACT AND PORTABLE: The small and lightweight design of this product makes it incredibly portable, allowing users to enjoy amplified sound wherever they go.3. USB CHARGING: It features a built in 450mAh lithium ion battery that can be easily charged through USB cable, say goodbye to the hassle of constantly replacing batteries.4. GUITAR SOUND ACCESSORY: By using this product, users can hear the intricate details and nuances of guitar music, enhancing their playing skills and musical expression.5. ENHANCE PERFORMANCE: With this guitar headphone amp, you can elevate your live performances by practicing and playing your guitar at any time and in any place.Specification:Item Type: Guitar Headphone AmpMaterial: ABSModel: METALBuilt in Lithium ion Battery: 450mAh (included).Package List:1 xGuitar Headphone Amp1 x USB Cable1 x Audios Cable