Adjustable frequency UHF band (A: 530.00-554.50MHz, B: 556.00-580.50 MHz), each channel has 99 optional frequencies Transmitter: 2 metal handheld microphones, receiver: metal body, on/off button, volume button, LCD screen Two XLR outputs and a 1/4 inch mixed output. Range: about 160 feet (about 50 meters), suitable for karaoke, lectures, parties, churches, conferences, home use, etc. Stability: 0.005% (-10-50) Deviation: 40KHz Signal to noise ratio: 96db Distortion: 0.5%@1KHz Frequency response: 30Hz-20KHz launcher: Microphone core: professional audio dynamic microphone core Transmitting power: less than equal 10dbm Frequency stability: +-0.005% Battery Two 1.5V batteries Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. size:21x16x5CM Material:Metal colour:black Voltage: AC110V Package Contents: 1 * Host 2 * microphone 1 * US plug 1 * 6.3 audio cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.