Features: This wireless microphone set adopts UHF (Ultra High Frequency) frequency band with strong anti-interference ability. High sensitivity and good sound quality, suitable for business meetings, performances, teaching, live performances and other occasions. Using the UHF (Ultra High Frequency) frequency band, the wireless microphone has the advantage of strong anti-interference ability. Very high sensitivity and good sound quality make your speech or singing more clear. The transmitter is powered by 2 AA batteries and the receiver is powered by a rechargeable lithium battery. The transmitter and receiver are far , suitable for business meetings, speeches, teaching, live performances, etc. Colour: Black Material: ABS Package Contents: 1 x receiver 2 x transmitter 2 x lavel microphone 1 x 3.5mm adapter 4 x AA batteries 1 x rechargeable battery 1 x charging 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.