UHF Frequencies-The wireless lapel microphone system has 20 frequencies for seamless, interference-free operation.An easy-to-read LCD information display provides constant monitoring of system operation, Receiver battery condition indicators with low-battery warnings. Convenient and easy to use- No static,no drop out with use at a distance of 40-65 feet.With unique paired ID synchronization for each wireless transmitter and receiver make setup easy.Setting up a wireless mic is as simple as plugging in a wired microphone. Wireless Headset & Lavalier-Headset microphone fits securely for active speakers and vocal performers.Lavalier microphone with included tie clip offers low visibility and hands-free use.optimized for Houses of Worship in a preaching, videos,and classroom and presentation applications. Versatile and Compatible Microphone-Work with mixers, pa speakers, electric guitar amplifiers and sound boards with 1/4 inch interface to output the sound, perfect for teaching lectures,conference speech, visiting guide.With included 1/4 inch to 1/8 inch adapter-cable,suit for camera recording. Technical parameters: Modulation Mode Transducer:Condenser Microphone Use:Stage Performance Wireless Microphone Set Type:Transmitter Sets Patterns:Omnidirectional Communication:Wireless Model Number:lavalier microphone Modulation :Digital Frequency Modulate Frequency Range Frequency range:UHF 500~980MHz Preset Frequencies Preset spelling point:8 (auto paring) Frequency response:75Hz~18kHz+/-3dB Max. Deviation Range Power consumption:80mA Battery Life Use time:Up to 6 Recharging Time Transmitting power:30mw Battery Type Use time 2:Up to 10 Dimension colour:black material:ABS Package Contents: 1 * launchers 1 * receiver 1 * USB cable 1 * 3.55 adapter 1 * headset microphone 1 * lavalier microphone Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.