Fangrui Product Details Stable Transmission Distance Of 30-50 Metres With Low Latency Greater Than 5ms For Device Accessibility. Large Capacity Rechargeable Lithium Battery,lasts Up To 4 Hours. High-penetration Sound, Lossless Reproduction Of Vocals. Plug And Play , Wired Microphone To Wireless Microphone, Get Rid Of The Wired Trouble. Automatic Channel Search,traditional Physical Button Operation Is Anti-miscontact And More Intuitive. Type-c Cable Charging, The Device Supports 48v Condenser And Dynamic Microphone Use. The Device Supports Linking, Mixing Consoles, Small Amplifiers, Combined Amplifiers, Sound Cards And Other Devices. One Key Switch On/off, 48v/0v Switching, Three Gears Reverb Effect Selection, With Red, Green, Blue Three Colour Display. You Can Also Choose To Turn Off The Reverb Effect Emitter Parameter: Carrier Frequency Range:2302mhz-2387mhz Rf Power Output: 10db Frequency Response:50hz-15khz Microphone Pickup: Moving-coil Type Power Supply: 14500 Battery Operating Current: 22-24ma Receiver Parameters: Carrie