Product Model: XXD-U12UMaterial: Plastic + metalMic Type: CondenserWearing Way: Headset wearingDisplay Screen: LCD Digital displayColor: Black Supply: Built-in rechargeable 500mAh 37V BatteryReceiving Sensitivity: -94dBmTransmitting Frequency: 689MHz-718MHzFrequency Response: 20Hz-20kHz: Receiver: greater than equal 95mA; Transmitter: greater than equal 110mAEffective Distance: 40-50mTransmitting Channels: 30Features: UHF Wireless technology, anti-interference, long distance, high definition, and USB flash disk supportedCompatibility: All audio equipments with Mic portsNet Weight: About 36gGross Weight: About 87gCharging one time and it can be working for up to 12 hours.200 FM transmitting channels to choose, no interference with each other, multiple functions and wide compatibility.HD digital display screen, light weight and portable with volume up function.Ergonomic design makes it comfortable to wear.It is widely applied in teaching, guiding, promotion, lecture, meeting, karaoke, singing, home using, KTV and computer.package list1 X Wireless Microphone1 X Cable Line1 X USB Receiver1 X 35mm Audio Cable1 X 635mm Mic PlugOnly the above package content, other products are not included.Note: Light 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.