Feature:1. Portable Guitar Headphone Amplifier with true analog circuit, faithfully simulates the response of amps.2. Supports GAIN, TONE and VOLUME adjusting, you can create your own guitar sounds freely.3. With 3.5mm headphone jack, playing guitar with headphone at high volume but not bothering neighbors.4. 3.5mm(1/8 inch) AUX input jack lets you play guitar with the music you like in your audio player.5. Built-in rechargeable battery, supports up to 5-6 hours continuous working time, and with LEDs showing charging status and remaining power.Specification:Features:Portable Guitar Headphone Amplifier with true analog circuit, faithfully simulates the response of amps.Supports GAIN, TONE and VOLUME adjusting, you can create your own guitar sounds freely.With 3.5mm headphone jack, playing guitar with headphone at high volume but not bothering neighbors.3.5mm(1/8 inch) AUX input jack lets you play guitar with the music you like in your audio player.Built-in rechargeable battery, supports up to 5-6 hours continuous working time, and with LEDs showing charging status and remaining power.Specifications:Brand: VITOOSModel: METALBattery: 3.7V 450mA Rechargeable BatteryItem Size: 8.5 * 8 * 2cm/ 3.3 * 3.1 * 0.8inItem Weight: 48g/ 1.7ozPackage Size: 17 * 11.5 * 3.5cm/ 6.7 * 4.5 * 1.4inPackage Weight: 125g/ 4.4ozPackage List:1 * Guitar Headphone Amplifier1 * USB Charging Cable1 * Audio CablePackage List:1 * Guitar Headphone Amplifier1 * USB Charging Cable1 * Audio Cable