Feature: 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. Specification: Item Type: Wireless VHF Microphone Material: ABS Mute Control: Lock Noise Frequency Channels: 10 Channels, ID Code Random Change Frequency Response: 40Hz to 18kHz Frequency Stability: ±10PPM SNR: >60dB Distortion: ⩽ 0.5 Percent Sensitivity: ‑70dBM Usage Distance: 30 Meters/32.8yd in Open Area Battery Type: Lithium Battery Receiver Power Supply: 1500MAH (included) Single Microphone Power Supply: 1500MAH (included) Transmit Power: 20mW Frequency Range: 200‑270MHz. Package List: 1 x Receiver2 x Microphone 1 x Charging Cable 2 x Anti Slip Ring2 x Windproof Cotton Cover1 x Conversion Head