This wireless microphone set adopts UHF (ultra-high frequency) band which provides strong anti-interference. It has high pick up sensitivity and good tone quality, suitable for business meeting, speeches, teaching, live performance and more situations.Features:This set includes a transmitter with antenna, a receiver with antenna, a headset microphone, an USB cable and a user manual.Adopting UHF (ultra-high frequency) band, the wireless microphone set has the advantage of strong anti-interference.Extremely high pick up sensitivity and good tone quality make your speech or singing more clear.The transmitter is powered by 2 AA batteries (not included), the receiver is powered by 1200mAh rechargeable lithium battery.Long distance connection between transmitter and receiver, the set is suitable for business meeting, speeches, teaching, live performance, etc.Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Color: BlackMaterial: PlasticFrequency Range: 600MHz-700MHzModulation Mode: Digital Frequency ModulateFrequency Response: 50Hz-18KHzS/N: 90dBDistortion: ≤0.5%@1KHzOutput Level: 200mV±5mVSound Cartridge: DynamicTransmitter Power Supply: 2 * 1.5V AA Battery (not included)Receiver Power Supply: 1200mAh Lithium Battery (included)Item Size: 180 * 66 * 23mm / 7.09 * 2.60 * 0.91in (Transmitter); 203 * 37 * 23mm / 7.99 * 1.46 * 0.91in (Receiver)Item Weight (without battery): 67g / 2.36oz (Transmitter); 29g / 1.02oz (Receiver)Package Size: 31 * 14 * 6.5cm / 12.20 * 5.51 * 2.56inPackage Weight: 320g / 11.27ozPackage List:1 * Transmitter1 * Receiver1 * Headset Microphone1 * USB Cable1 * User Manual (English)