- Plug and PlayLavalier microphone: Simply connect the receiver directly to your smartphone, tablet or laptop. The transmitter and receiver are automatically paired with one button when turned on. No app or Bluetooth required. - Intelligent noise and reverb reduction function: built-in professional noise cancellation chip, the microphone can detect authentic voice and record clearly even in noisy environment. It supports real-time multi-channel mixing and can sync background music for your phone and human voice in real time. - Mini Portable and Durable: Small compact size that can be easily attached to a shirt, tie or bag. Ideal for filmmakers, vloggers, mobile journalists, content creators, teachers, etc. Parameter: Color: Black Transmission distance: barrier-free distance 20 meters, human barrier distance about 7 meters Battery: 80 mAh Plugin: Apple or Type-C Receiver Frequency Range: 2,4 GHz Working time: about 6H Charging time: about 90 minutes Transmission delay: 18 ms Signal-to-noise ratio: 64 dBm Frequency Response: 20-20 KHZ Included: 2x Microphone 1x Receiver with Apple plug 1x TYPE-C plug receiver 2x USB data cable 1x Instruction Manual