Wireless Removable Keyboard Touchpad Computer Accessories with PU Leather Case for Lenovo Tab Pro 11.5in J706F/J716F Or Item Type: Wireless Removable Keyboard Material: ABS, PU Applicable Models: for Lenovo Tab Pro 11.5in J706F/J716FBT: BT 3.0 Modulation Method: GFSK Working Current: <2.5mA Standby Current: <0.3mA Sleep Current: <40uA Charging Current: >200mA Keystroke Force: 80 ± 10g Built-In Battery Capacity: 200mAh (Polymer Lithium Battery) (Shipped with Built-In Battery) Battery Life: 3 Years Charging Time: 3-4 Hours Continuous Working Time: 100 Hours Standby Time: More Than 100 Days Button Life: 5 Million Times Effective Operating Distance: Approx. 10 meters / 10.9yd Equipped With: Touch Pad and Pen Slot, with Touch Control Function