The noise reduction function can be turned on/off freely to restore clean and pure sound quality2.4GHz wireless transmission technology, low latency, more stable signal transmissionBuilt-in high-quality omnidirectional microphone, providing users with broadcast-level sound qualityAutomatic pairing at startup, no code pairing required, plug and playDual-channel design to meet various recording scenariosThe transmitter can work continuously for 9 hours after being fully chargedDuring recording, if your device needs to be charged, you can connect to this USB-C port to charge itCompatible with mobile phones, tablets, computers and other recording devices with USB-C interface<br> Specifications:<br> Transmission Type: 2.4GHzDirectivity: OmnidirectionalFrequency Response: 20Hz-16kHzSNR: 80dBSensitivity: -42dBTransmission Range: 50m (without obstacle)RX Output Power: 6dbTX Battery Capacity: 95mAhTX Charging Time: about 2 hoursTX Battery Life: about 9 hoursReceiver Power Supply Mode: external equipment power supplyBY-V20-TX: 9.5gBY-V20-RX: 6gBY-V20-TX: 52.22x25.23x19.75mmBY-V20-RX: 43.92x24.7x9.3mm