... circuit board,2mm thickness 2)BRCM chip 3)bluetooth keyboard with rotation leather case ITEM :for ipad 2 cover with keyboard for ipad2 rotation case ... 2 5, operating voltage: 3.0-5.0 6, work current: <5.0MA 7, standby current: 2.5MA 8, sleeping current: <200UA 9, charging ... working Time: 25 days12, uninterrupted working time: 90 hours 13, charging time: 4-4.5 hours 14, Li-ion battery Capacity ...