Feature:1. Stereo headphone output, MP3 audio accompaniment input.2. Whether it\u0027s in the middle of noisy crowds or in the dead of night, rock-and-roll at any time, enjoy the music to bring you happiness.3. Compact and meticulous design, easy to fit into your pocket.4. The LED power indicator clearly indicates the length of work and avoids the concern of insufficient power.5. Heavy metal tone (built-in distortion adjustment knob, volume adjustment knob).6. Electric guitar headphone amplifier, headphone amplifier built-in rechargeable battery, unlimited charging.Specification:Heavy metal-rock circuit, clever fusion in the mini-circuit, the clear part of the smooth and pure, distortion part of the full flow, warm tone, bring you the shock of the ear, ready your headphones, and the mind together with r-ock.Features:Stereo headphone output, MP3 audio accompaniment input.Whether it's in the middle of noisy crowds or in the dead of night, rock-and-roll at any time, enjoy the music to bring you happiness.Compact and meticulous design, easy to fit into your pocket.The LED power indicator clearly indicates the length of work and avoids the concern of insufficient power.Heavy metal tone (built-in distortion adjustment knob, volume adjustment knob).Electric guitar headphone amplifier, headphone amplifier built-in rechargeable battery, unlimited charging.Specifications:Material: PVCColor: blackBattery: 3.7V, 500mAhProduct size: 87 * 81 * 29mm / 3.4 * 3.2 * 1.1inProduct weight: 51g / 1.8ouncePackage size: 180 * 130 * 31mm / 7.1 * 5.1 * 1.2inPackage weight: 116g / 4.1ouncePackage List:1 * Guitar Plug Headphone Amp1 * Cable (male to male)1 * USB Cable1 * Splitter PlugPackage List:1 * Guitar Plug Headphone Amp1 * Cable (male to male)1 * USB Cable1 * Splitter Plug