1.Shell material: metal. 2.Size: 20 * 7 * 7cm. 3.Color: Gold, rose gold, black. 4.Output power: 5W. 5.Frequency Range: 100Hz to 10KHz. 6.Max Sound Pressure Level: >115db 1KHz TDH <1%. 7.Reverberation Mode: Sound effect reverberation. 8.Power Supply: Built-in 18650 Li-battery. 9.Battery Capacity: 1800mAh. 10.Charging Power: DC 5V. Note： 1.There might be a bit color distortions due to different computer resolutions. 2.Please allow 1-3mm error due to manual measurement, make sure you do not mind before you bid. Package included: 1 * Microphone. 1 * USB charging cable.