1. Wireless Lavalier 2. BS-Q8 series is a mini 2.4Ghz wireless microphone system that provides sound for live streaming, vlogging, course recording, and other audio capturing applications. 3. BS-Q8-A is compatible with most iOS devices, and it comes with 2 transmitters and 1 receiver. 4. BS-Q8-C is compatible with most Android devices with USB-C ports, including smartphones and tablets. It has 2 transmitters and 1 receiver. 5. BS-Q8-2 USB-C includes 2 transmitters and 2 receivers, and it can record two sound sources at the same time. 6. Transmission distance: 10-30 meters 7. Signal to noise ratio: 70dB 8. Working current: 12mA 9. Earphone monitoring: support 10. Noise reduction: Supports three-level noise reduction 11. Reverb: support 12. Charging compartment battery: 300mA/H 13. Frequency response: 20Hz-20KHz 14. Adapters: 5V/1A 15. Working temperature: -10°C-50°C 16. Color: Black 17. Material: ABS 18. Package Contents: 1 * microphone set, 1 * USB data cable 19. Only the above package content, other products are not included. 20. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.