Features 1、Rechargeable Wireless Microphone: both the transmitter and the receiver built in rechargeable lithium battery, charging USB cable included. 2、4 Switchable Channels: with indicator light for each channel, and also has status indicator circle. 3、Long Transmission Distance: the wireless mic system has high stability that has the transmission distance greater than 30 meters. Specifications: The wireless microphone system is specially designed for moving-coil microphone, changing microphone into wireless one, user-friendly setup and without cables, suitable for various situations. Features: Rechargeable Wireless Microphone: both the transmitter and the receiver built in rechargeable lithium battery, charging USB cable included. 4 Switchable Channels: with indicator light for each channel, and also has status indicator circle. Long Transmission Distance: the wireless mic system has high stability that has the transmission distance greater than 30 meters. High Performance: signal delay less than 5ms. Use open 5.8GHz ISM frequency band. 24bit audio resolution with sampling frequency of 48K. Specifications: MW-1 RECEIVER: Power Supply: Built in lithium battery Battery Capacity: 3.7V, 400mAh Signal to Noise Ratio(SNR): 105dB Frequency Response: 20Hz~20KHz Receiving Sensitivity: -85dBm Delay Time: <5ms Received Frequency: 5.8GHz frequency Sampling Rate: 24-bit / 48Khz Anti-jamming Method: Frequency hopping Output Impedance: 680Ω Signal Distortion: <0.02% Port's Type: XLR male connector Gain: 0dB Item Size: 90 * 30mm / 3.54 * 1.18in MW-1 TRANSMITTER: Power Supply: Built in lithium battery Battery Capacity: 3.7V, 400mAh Frequency Response: 20Hz-20KHz Delay Time: <5ms Transmission Power: 7dBm Sample Rate: 24-bit / 48Khz Working Frequency: 5.8GHz frequency Input Impedance: 3.3kΩ Anti-jamming Method: Frequency hopping Port's Type: XLR female interface Item Size: 95 * 30mm / 3.74 * 1.18in Material: Metal Item Weight: 159g / 5.61oz Package Weight: 275g / 9.72oz Package Size: 16.3 * 11.6 * 3.7cm / 6.42 * 4.57 * 1.46in Packing List: 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * Manual (English) Package List 1 * Transmitter 1 * Receiver 1 * USB Cable 1 * Manual (English)