Features: This Guitar Headphone Amp, a pocket sized amplifier that delivers highly sound and features a USB rechargeable battery for endless jamming. This mini guitar headphone amplifier boasts a small design with size of 85mmx38mm x18mm and lightweighted,perfectly for musicians who need a reliabled solution. For guitarists this headphone amp allows you to practice privately without disturbing others, making it a must accessory for any musician's collection. Whether you're practicing for home,or in studio, the Guitar Headphone Amp provides versatiled connection with its 3.5mm input and headphone input, ensuring compatibility with various Auditory devices. With power cable this headphone amp ensures you stay powering up and ready to rock whenever inspiration strikes. Specifications: Item: Guitar Headphone Amp Size: about 85mmx38mmx18mm/3.3x1.4x0.7in Component：ABS 3.5 Plugs Cable Length: 103mm/40.5in USB Cable Length:about 82mm/32in Package Includes: 1PC Guitar Headphone Amp note: Due to problem of lighting effect, there might be tolerances in product, please understand. Please allow 1cm errors due to measurement.