Q9 2 in 1 Lavalier Wireless ENC Microphone 1. 2.4G wireless technology with automatic frequency matching. 2. ANC+ENC dual noise reduction technology filters out background noise, resulting in clearer vocals. 3. Uses dual high-quality condenser microphones with imported chips, providing 360-degree ultra-clear omnidirectional sound pickup. 4. Supports real-time monitoring with zero latency. 5. Continuous recording for 5 hours per session. 6. With the charging case, up to 40 hours of battery life. 7. The receiver is equipped with a Type-C port, so you can charge your phone and record simultaneously. 8. Magnetic detachable back clip design makes it easy to carry and perfect for outdoor live streaming. Specifications Input Voltage: DC5V Microphone Battery: 75mAh Charging Case Battery: 600mAh Battery Life: 5-8 hours SNR: 70dBm (ANC) Transmission Latency: 30ms Sensitivity: -38dB Frequency Response: 20-20kHz Transmission Distance: 20 meters (unobstructed) Charging Case Dimensions: 85x43x51mm Receiver RX Dimensions: 40x19x8.7mm Microphone TX Dimensions: 29x28.5x12mm