Dual UHF Wireless Microphone System Portable Professional Cordless Microphone Set for Interview Recording Feature: 1. [CLEAR SOUND QUALITY] Wireless headset microphone system with UHF sound transmission, high signal to noise ratio, clear, distortion free, crisp vocals and excellent sound reproduction. 2. [RECEIVER AND ANTENNA DESIGN] Plug in sound adapter receiver; dual UHF wireless microphone system with integrated antenna for extended wireless range 3. [BROAD COMPATIBILITY] The wireless headset microphone system can be connected directly to amplifiers, stereos, sound processors and DJ mixers. 4. [LONG RANGE] The cordless microphone set with an operating range of up to 30‑50 metres/98.4‑164.0ft, the wireless microphone kit allows you to move easily without wires. 5. [WIDE APPLICATION] UHF microphone kit for karaoke, classroom, office, commercial applications, perfect for public sound and studio use. 6. [EASY TO OPERATE] The Microphone Kit features an individually adjustable channel volume control switch and LCD digital display for easy operation at a glance. Specification: Item Type: Cordless Microphone Set Material: ABS Wireless Range: 30-50m/98.4‑164.0ft Transmitter Specifications. Frequency Range: 676~697MHz Number of Channels: 10 (Conservative Value) Frequency Stability: ±10ppm RF Power: 10dBm Frequency: 40~18000Hz Distortion: ≤0.5% Single Transmitter Battery Specification: 2 x AA Batteries (Not Included) Receiver Specifications. Frequency Range: 676~697MHz Number of Channels: 10 (Conservative Value) Frequency Stability: ±10ppm Receiver Sensitivity: -95~-71dBm Sound Frequency: 40-18000Hz SNR: ≥90db Sound Output: 300mv (Maximum) Single Receiver Battery Specification: 1 x 18650 Battery (Not Included) Package List: 2 x Transmitter (Battery Not Included) 2 x Microphone 1 x Receiver (Battery Not Included) 1 x Data Cable 1 x English Manual