WM900 UPC: 879408001960 Title: 900 MHz UHF Wireless Microphone Features: Tired of tripping on microphone cables? Ran out of cable crossing the stage during a performance? End these annoyances with our 900 MHz UHF Wireless Microphone. Lightweight and featuring a useable range up to 150 feet. No need to worry about frequencies when you add multiple wireless microphones to your equipment. This microphone allows for unique pairing to each receiver. Connect up to 20 microphones on unique frequencies. No more wireless microphones walking on each other! Enjoy a clear interference-free UHF (Ultra High Frequency) transmission with multiple microphones! Lock-in up to 20 microphones and receivers with unique frequencies with our 16 Bit Digital Pilot ID. Microphone will automatically pair with receiver or you can manually select your chosen frequency. Great for karaoke, bands, orchestras and theatrical stage performances. Durable Metal Body and Grill Up To 20 Unique Selectable Frequencies Powerful UHF Transmission and Reception Without Interference 16 Bit Digital Pilot ID for Fast and Accurate Pairing Effective Range: 150 Feet Lightweight, Portable and Convenient to Use Compatible With Almost Any Karaoke, PA System, Amplifiers or Audio Hi-Fi Systems Transmitter (Microphone) Requires 2 x AA Batteries (Not Included) Receiver Has Built-in Li-ion Rechargeable Battery Cell (Charging Cable Included) FCC Approved: 902 MHz-928 MHz UHF (Ultra High Frequency) Lithium Ion Polymer Battery Model: 802040 Voltage: 3.7V Power: 600mAh / 2.2 Wh Weight: 11 grams Lithium Weight: 3.85 grams Size: 40 x 20 8mm .