Features: 200-290MHz VHF wireless handheld microphone & receiver system for karaoke, party, DJ, business meetings, speech or other outdoor & indoor activities. High-quality sound transmission, clear voice and low noise, without feedback and free from distortion, suitable for live performance. 5 selected channels, supports using 5 sets at the same time; and the effective transmission range is about 30M in open area. The receiver with 6.35mm(1/4") connector, you can connect it to your speakers or amplifiers easily. Plug and play, easy to use, wireless battery-powered microphone & receiver allow you to move freely on stage or in the room. Specifications: --System Frequency Response: 200-290MHz Frequency Bandwidth: 50MHz Modulation: Broadband FM Number of Channels: 5 channels The Peak Frequency Deviation: 45KHz Frequency Responses: 80Hz-15KHz S/ N Ratio: 50dB T.H.D. (Overall): 2% Working Distance: 30m no obstacles Working Temperature: -10-55 --Receiver Sensitivity: 5dBuV Spurious Suppression: >80dB Audio Output: 1/4" unbalanced output 400mV/3K Power Supply: 2 * AAA Batteries(not included) Receiver Size: 7 * 2.7 * 2.3cm / 2.8 * 1.1 * 0.9in Receiver Weight: 29g / 1oz(without batteries) --Transmitter Transmitter Power: max. 30mW Transmission Stability: 30ppm Dynamic Range: 100dB(A) Frequency Responses: 50Hz-15KHz Sound Pressure: max. 130dB SPL Power Supply: 2 * AA Batteries (Not Included) Transmitter Size: 24 * 4cm / 9.4 * 1.6in Transmitter Weight: 128g / 4.5oz(without batteries) Package Size: 29.5 * 13 * 6.5cm / 11.6 * 5.1 * 2.6in Package Weight: 300g / 10.6oz Package List: 1 * Microphone 1 * Receiver 1 * Anti-Slip Sleeve 1 * Foam Cap