2.4G Bluetooth Wireless Lavalier Noise Canceling Live Microphone 1. Shell process: ABS 2. Signal-to-noise ratio: 70db 3. Input voltage: DC-5V 4. Frequency response range: 10Hz-7KHz 5. Battery capacity: 400mAh 6. Audio signal: digital sampling 16bit-16kHz 7. Modulation method: GFSK 8. Transmitting power consumption current: 40mA 9. Receive power consumption current: 25mA 10. Applicable scenarios: teachinglive broadcastvideo shootingoutdoor recording ETC, etc. 11. Plug in the earphones to the receiver to keep track of the audio quality 12. 30 meters long-distance wireless transmission, 2.4G signal stability 13. DPS noise reduction restores human voice, picks up sound clearly, and reduces environmental noise 14. Plug in the receiver to connect automatically, no need for troublesome operation 15. 360 omnidirectional pickup, high sensitivity, high-fidelity sound quality, mini and compact 16. 8 hours long battery life, built-in rechargeable lithium battery 3.7V 17. Dimensions: 45x24x28 mm Packing list: - G18L Launcher x 1 - Receiver x 1 - Charging cable x 1 - U-shaped adapter x 1 - 3.5 to 6.5mm adapter x 1 - Box x 1