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1. Bluetooth version: 5.3
2. working current: 25-35mA
3. Operating range: 10m
4. frequency range: 280KHZ-16KHZ
5.distortion degree: ≤1%
6.frequency response: 20Hz-20KHz
7. Working time: about 1-2H
8. charging voltage: 5V9, signal to noise ratio: S/N≥95
10. Charging time: about 1.5H
11, battery capacity: 300 MA12, product size: 60mm *60mm *50mm
13.packaging size: 65*65*75mm
14. Net weight: 106g
