Compatible:Microsoft 12.3-inch surface pro3/pro4/pro5/pro6/pro7
Product size: 295*220*5mm
Product weight: 280g
Specification:
1. Bluetooth 3.0 standard interface
2. Effective operating distance: 10 meters
3. Modulation method: GFSK
4. Working voltage: 3.0-4.2V
5. Standby time: more than 100 days
6. Charging time: 2-3 hours
7. Lithium battery capacity: 550mah
8. Sustainable working hours: 35-100 hours
9. Lithium battery life: 3 years