Feature:1. Superior Performance: 2.4G private transport protocol, private high quality compression algorithm. Adaptive frequency hopping, strong anti interference, signal stability, long distance.2. Simple Operation and Charging Ways: Automatic pairing, plug and play, supporting slow or fast charging (charging while recording).3. Clear Sound Quality: High density sponge filter noise, clear pickup improves sound fidelity, high density sponge head (anti spray and anti wind).4. High Sensitivity: The wireless lavalier mic built in 360 degree full pointing high sensitivity microphone, but also support ECM, MEMS, analog microphone.5. Compatible and Long Service Life: Good compatibility, while supporting mobile phone, computer, tablet. The microphone has a built in 60mAh rechargeable button battery that can last 6 to 10 hours.Specification:Item Type: Wireless Lavalier MicrophoneMaterial: ABSEmitter 10mAReceiver 25mASupport: USB Firmware Backup and UpgradeBuilt In Lithium Polymer Battery: 60mAhFrequency Response: 20HZ-20KHZSensitivity: -30dbSnr: -65dbTransmission Distance: 20m/65.6ftInterface: Type C.Package List:1 x Receiver 1 x Transmitter1 x Description1 x Charging Line 1 x Hang Rope