Features 1.APPLICATION: Wireless lavalier microphone is ergonomically designed for a comfortable feel, and can be used for srtage or KTV to enjoy the convenience of wireless. 2.CLEAR SOUND: This wireless lavalier microphone adopts a professional dynamic microphone core, filtering ambient noise and restoring the human voice. 3.EASY TO USE: The wireless clip on microphone is simple to operate, supports automatic frequency pairing, fast and convenient, easy to change the frequency. 4.RICH DETAILS: Clip on mic has a high frequency response range, the working frequency range is 610MHz?675MHz, allowing you to hear more rich sound details. 5.BATTERY POWERED: The microphone requires 2 AA batteries (not included) and the receiver requires 2 AAA batteries (not included) for long time use and easy replacement. specificationItem Type: Wireless Lavalier Microphone Material: Aluminum Alloy Transmitter: Frequency Range: 610MHz-675MHz Modulation System: DQPSK Frequency Response: 60Hz-16KHZ Transmitter Power: 10dBm Battery Type: 3V Operating Current: 100mA Microphone Battery: 2 x AA Batteries (Not Included) Receiver: Frequency Range: 610MHz-675MHz Receiver Sensitivity: -94dBm Battery Type: 3V Operating Current: 100mA Receiver Battery: 2 x AAA Batteries (Not Included) PackageList1 x WirelessLavalierMicrophone 1 x Transmitter 1 x Instruction Manual 1 x 3.5mm Adapter 1 x Receiver