Product Features:<br> 1. Compact wireless transmission system, built-in lithium battery, plug and play, easy to operate.<br> 2. The most stable wireless propagation technology, UHF band, can eliminate interference problems even when multiple systems are used at the same time.<br> 3. Not only suitable for XLR microphones, but also for guitar audio reception.<br> 4. Compatible with dynamic and condenser microphones with built-in power supply.<br> 5. Compatible with mixers, recorders, speakers, sound reinforcement systems, amplifiers, etc.<br> Product parameters:<br> Frequency range: 500 MHz - 599 MHz<br> Channel distance: 0.5 - 2.5 MHz<br> Setting: DOPSK<br> Frequency stability: +3ppm<br> Frequency response: 40hz - 20khz<br> Receiving distance: 30m<br> Voltage: 3.7v, 800ma lithium battery<br> Charging time: 3 hours<br> Usage time: 8 hours<br> single transmitter package:package includes:<br> Transmitter*1<br> Receiver*1<br> Charging cable*1<br> Instruction manual*1<br> Dual transmitter package: package includes:<br> Transmitter*1<br> Receiver*2<br> Charging cable*2<br> Instruction manual*1<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store