PRO-4CII Wireless Lavalier Microphone Set with Receiver 1 to 4 UHF FM Portable Condenser Microphone

• Clear sound, high reduction, no distortion
• With sound cotton, effectively reduces voice howling
• The microphone's built-in rechargeable 400mAh lithium battery 
• With a 3.5mm direct plug, more flexible using
• Suitable for computer camera, cell phone, interview recording, etc

Specifications:

• Pickup mode: Capacitor type
• Frequency Response: 20Hz~14KHz
• Mode: Omnidirectional
• Sensitivity:-44±3dB
• Impedance:1000Ω±30%
• Voltage: Positive pressure on the diaphragm generates a positive voltage AI pin2 relative to pin3
• Output Connector: 3P XLP (M)
• Receiver battery: 2600mAh
• Microphone battery: 400mAh, 4Pcs total: 1600mAh