This item is a wireless headset microphone.Provide convenience for teaching, mobile training and visiting, performance and sales in stores, supermarkets or sales booths.The product appearance design is simple and generous. Features -Color:Black -Material:ABS -Size:21.00X13.00X1.80cm/8.25X5.11X0.71in -Voltage:5V -Frequency range: 600-900MHZ -Transmitter power: > 10DBM -Receiver sensitivity: < 99DBM@80DM SNR -Operating current: < 75ma -Antenna: built-in (maximum range distance: >=50 meters) -Audio frequency response: 20Hz-17.5kh -Audio dynamic range: > 100DB -Total harmonic distortion: < 0.3% -USB charging cable: Included -Charging port: 5V -Receiver: 3.5mm - Made of , it is durable and practical in use. - The product appearance design is simple and generous. - The product can accept and output words and . - The product has the function of noise reduction. - Suitable for a variety of equipment, good versatility Package list: 1 x Microphone 1 x receiver 1 x headset support 1 x manual 1 x adapter 6.35mm 1 x charging cable