Features:  Rare earth material speaker, 8W high-power audio output, advanced DSP chip of effective feedback rejecting, ensure excellent, loud sound.  One button to switch between speech mode and singing mode, easy operation; volume adjustment, convenient to control volume level as different venue.  It can BT wireless connect to smart devices, without troublesome cable, for playing favourite music as accompaniment, very convenient.  Built-in high capacity lithium battery, supports long service time, about 8h of use, ultra-long standby, auto-off after no signal input for 15mins, energy-saving.  This microphone has light weight, compact size, comfortable holding, suitable for singing, teaching, speech, training, company meeting, etc.    Specifications:  Material: Plastic  Color: Black  Package Size: 27.5*10*8.5cm / 10.82*3.93*3.34in  Package Weight: 485g / 17.10oz    Frequency Response: 100Hz-15kHz  Power: 8W  Speaker Impedance: 4Ω  THD: THD≤5% 1KHz＠4R, 4W  S/N Ratio: 66dB (A-Weighted) ＠1W 4Ω (Speech Mode)  BT Version: 5.0  Reverb: Reverb  Operating Voltage: 3.4V-4.2V  Battery Type: Li-ion battery  Battery Capacity: 3.7V/2000mAh  Charging Port: Type-C  Charging: 5V--1.5A  Charging Time: About 3h  Operation Time: About 8h (Speech)  Net Weight: About 220g  Dimension: Φ64mm*235mm    About Cartridge  Cartridge: Back Electret   Polar Pattern: Unidirectional  Frequency Response: 150Hz-16KHz  Sensitivity: -47.5±1.5dB (0dB=1V/Pa, at 1KHz)    Note:  Microphone set only, others in pictures are not included.  Due to manual measurement, there may be deviation.  Due to lights or others, it may slightly differ from pictures.    Packing List:  1 * Speech Microphone  1 * Sponge Windscreen  1 * Charging Cable  1 * User Manual