Specifications: Material: ABS metal Total Volume: 0-12 Tone: 100Hz-6.02KHz Earphone Output Socket: 3.5mm Output Socket: 6.35mm Mainboard Size: 115 * 53 * 21mm / 4.53 * 2.09 * 0.83in Battery Compartment Size: 72 * 38 * 23mm / 2.83 * 1.50 * 0.91in Item Weight: 116g / 4.11oz Package Weight: 120g / 4.23oz Package Size: 13 * 10.5 * 3cm / 5.12 * 4.13 * 1.18in Package List: 1 * Mainboard 1 * Battery Compartment 1 * Pickup Stick 2 * Knob Cap 10 * Screw