Features:
1. Self-connection after power-on, stable frequency
2. 30 meters barrier-free and stable transmission
3. Support volume and volume adjustment, support one-key noise reduction function
4. The sound is clear, not stuck, and constantly frequency
5. Applicable scenarios: video, on-site teaching
6. No serial frequency, flexible collocation, easy to deal with various scenes, the same scene can use 6 groups at the same time

parameter:
1. Pointing range: omnidirectional
2. Frequency: 2.4G
3. Frequency response range: 20Hz-20kHz
4. Transmission distance: 50 meters
5. Signal-to-noise ratio: greater than or equal to 58db
6. Battery capacity: 350mAh/3.7v
7. Charging interface: Type-c interface
8. Rated input: DC5V/1000mAh
9. Charging time: 30 minutes
10. Working hours: 6-8 hours
11. Working temperature: -10-45 degrees Celsius
12. Storage temperature: -20-60 degrees Celsius