One To Two Digital Charging Compartment Lavalier Microphone Noise-Canceling Wireless Mic For Live Streaming 1. Realize long-distance high-definition radio for webcasting, video vlog shooting, interviews, audio, video teaching and other occasions use 2. Automatic noise reduction, reverb, monitoring, playback, mute, can be live while charging the phone 3. 2.4G wireless connection, boot automatically connected, easy to operate, support for one tow two people to use 4. Can be used for cell phones, computers and other devices without APP 5. Comes with a charging compartment, can be charged to the microphone, convenient storage, portable outings 6. The receiver supports all kinds of cell phones and computers, applicable to all major mainstream software 7. Lavalier design, stable and not fall off, intelligent frequency conversion noise reduction, filtering noise, more clear vocals 8. Can be inserted into the headset for real-time ear return monitoring, to avoid live accidents Parameters: 1. Microphone: digital silicon mark 2. Input voltage: 5V 3. Battery capacity: 60mAh 4. Charging compartment battery: 600mAh 5. Continuity: 6 hours 6. Signal-to-noise ratio: 64DBM adaptive noise reduction 7. Transmission delay: 15MS 8. Sensitivity: -26DB 9. Frequency range: 20Hz-20KHz 10. Transmission distance: 20 meters without obstacles 11. Size: - Receiver 25 x 8.5 x 43.5mm - Transmitter 19 x 16 x 45mm - Charging compartment 85 x 29 x 62mm 12. Weight: - Receiver: 5.3g - Transmitter: 7.3g - Charging compartment: 63.7g