1089A Magnetic Charging Bluetooth V3.0 Keyboard + Microfiber Leather Tablet Case for Microsoft Surface Pro 3 / 4 / 5 / 6(Black)

1. Bluetooth 3.0 standard interface 2. Effective distance within 10 meters 3. Lithium battery capacity: 350mAh 4. Charging time: 2-3 hours 5. Sustainable working hours: 35 hours 6. Standby time: 100 days 7. Working voltage: 3.0-4.2V 8. Working current: 200mA 12. 5 million button click life 13. Product size: 29.6x22x7mm