How to Use: 1. Turn on the wireless keyboard holster and push the switch from 0FF to ON. At this time, the holster keyboard will start, and the indicator will turn off after 4 seconds. Press the "Connect" button on the keyboard, the indicator light flashes, and BT is activated at this time 2. Turn on the tablet, find "Settings", "Turn on wireless and network", "Turn on BT", "Search nearby devices", search for the wireless keyboard of the protective case, and click Connect (FN+A S D can switch between different systems) Specification: Item Type: Wireless Removable Keyboard Material: ABS, PU Applicable Models: for Lenovo Tab 11in J606F BT: BT 3.0 Modulation Method: GFSK Working Voltage: 3.0-4.2V Working 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 Backlit Function: Support Package List: 1 x PU Leather Case 1 x Wireless Removable Keyboard 1 x Charging Cable Note: Shipped with Built‑In Battery