Features: Made of good quality plastic and electrons, stable performance and good durability. Plug and play, English distortion effect, it will help you enjoy classic English style rock. With built-in AUX IN interface and earphone jack, make it easy to practice along with your audio player, convenient for you to do practice anytime. Powered by 2*AAA batteries, working time is up to 40H. Portable and lightweight, easy to carry. Specification: Material: Plastic Color: black Power: 3*AAA battery (not included) Size: approx. 10*8.8*2.3cm / 3.93*3.46*0.9inch Weight: approx. 79g Package List: 1 x Earphone Amplifier 1 x Manual 1 x Clean Cloth 1Made of good quality plastic and electrons, stable performance and good durability. 2Plug and play, English distortion effect, it will help you enjoy classic English style rock. 3With built-in AUX IN interface and earphone jack, make it easy to practice along with your audio player, convenient for you to do practice anytime. 4Powered by 2*AAA batteries, working time is up to 40H. 5Portable and lightweight, easy to carry.