This microphone is made of high-grade materials, which is durable and has a . The volume is suitable, the design is compact, and it is very convenient to carry and use. It has a wide range of applications. Features -Color:Black -Material:Plastic -Size:13.50X12.00X6.00cm/5.31X4.72X2.36in -Note: The receiver is powered by 1 AA battery; the transmitter is powered by 2 AA batteries. (Not Included) -Input Voltage: DC5V -Frequency response range: 60Hz-15KHz -Battery Life: 3-6 hours -Frequency: VHF -Receiver frequency band: 266.85MHZ -Receiving distance: 30 -Frequency stability: ±0.005% -Signal to Noise Ratio: >40dB -Transmitted power: 16DB -Receive sensitivity: -103DB -Plug of the receiver: 6.35 mm -Made of professional workmanship, the microphone can effectively environmental noise, intelligent noise reduction. - The light wireless headset microphone is comfortable for you to wear, which will not add much burden to your heads and ears. - The wireless microphone has the 30-meter wireless coverage, which makes it very practical to use. - The transmitter is small and compact, which can be easily fixed on the waist of your trousers. - The receiver is widely used, suitable for speaker and other sound equipment with 6.35mm microphone jack. Package list: 3 pcs x 1 × Microphone Headset 3 pcs x 1 × Receiver 3 pcs x 1 × Transmitter