1、NOISE REDUCTION: HiFi noise canceling microphone core, professional level large moving circle microphone core, make the singing voice more texture, effective noise reduction anti interference anti whistling. 2、TWO MICROPHONES: One drag two wireless microphone, easy to duet singing, professional tuning by acoustic engineers, full range sound pickup. 3、ULTRA HIGH FREQUENCY: Ultra high frequency wireless transmission, one time automatic frequency pairing, anti interference, strong signal penetration, 30 meters barrier free reception distance. 4、COMPATIBLE DEVICES: Plug and play, convenient, compatible with a variety of devices, such as outdoor trolley speakers, computers, DVDs, Bluetooth speakers and so on. 5、DSP CHIP: High performance DSP chip with digital sound processing technology, optimize the sound source, so that the K song is always effortless and comfortable. 1 x Receiver2 x Microphone 1 x Charging Cable 2 x Anti Slip Ring2 x Windproof Cotton Cover1 x Conversion Head Item Type: Wireless VHF MicrophoneMaterial: ABSMute Control: Lock NoiseFrequency Channels: 10 Channels, ID Code Random ChangeFrequency Response: 40Hz to 18kHzFrequency Stability: ±10PPMSNR: >60dBDistortion: ⩽ 0.5 Percent Sensitivity: ‑70dBMUsage Distance: 30 Meters/ 32.8yd in Open AreaBattery Type: Lithium BatteryReceiver Power Supply: 1500MAH (included)Single Microphone Power Supply: 1500MAH (included)Transmit Power: 20mWFrequency Range: 200‑270MHz