1. Operating distance: 10 meters
2. Modulation system: GFSK
3. Working voltage 3.3-4.2V
4. Charging current:<225mAh
5. Standby time: 90 days
6. Continuous working time: 5 hours (with backlight on)/380 hours (with backlight off)
7. Lithium battery capacity: 500mAh (backlight version)
8. Charging time:<3 hours
9. Lithium battery life: 3 years
10. Keyboard service life:>5 million times
11. Working temperature: -20~50 ° C
12. Charging temperature: 0-45 ° C
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