Feature:1. [Stable And Wide Range] Wireless lavalier microphone system has stable signal, no disconnection, clear sound quality and no distortion, 50M transmission distance.2. [Real Time Monitoring] You can use the wireless lavalier microphone system to monitor the sound in real time, control the details and avoid mistakes in the recording process.3. [Anti Interference] The lapel mic system adopts UHF digital wireless technology, which can provide powerful signal, high stability and anti interference, premium sound effect.4. [Noise Canceling] Clip on microphone transmitter receiver is equipped with a highly sensitive condenser microphone, intelligent noise reduction, clear sound pickup.5. [Widely Applicable] Wireless microphone transmitter receiver can be used for cell phone recording sound pickup, camera recording sound pickup. Easy to operate, plug and play.Specification:Item Type: Wireless Lavalier Microphone SystemMaterial: ABSTransmitter Receiver Size: Approx. 66 x 92 x 24mm / 2.6 x 3.62 x 0.94inSNR: More Than 80dBEarphone Output Level: 32, 65mwFrequency Range: UHF620-690MHZFrequency Response: 75HZ-1800HZTotal Harmonic Distortion: 1.0% at 1KHIdeal Use Distance: Approx. 50m/ 164ft (Ideal Environment)Receiver and Transmitter Battery Specification: 4 x AA Batteries (Not Included).Package List:1 x Receiver1 x Transmitter1 x Lavalier Microphone2 x Sound Cable 1 x Earphone2 x Hot Shoe Clip AssemblyNote:Manual measurement, please allow some errors.