Bluetooth Keyboard UltraThin Touchpad Keys Protective Cover Detachable Button Holster Set(Black ) Item Type: Bluetooth Keyboard Material: PU Leather + ABS Touchpad Function: Yes Applicable Model: For Samsung Galaxy Tab A7 T500/T505 Bluetooth: Bluetooth 3.0 standard interface Modulation Method: GFSK Working Current: <2.5mA Standby Current: <0.3mA Sleep Current: <40uA Charging Current: >200mA Keystroke Force: 80 ± 10g Function: Fn combined multimedia function Support Protocol: Bluetooth 3.0/4.0/1.1 Power Supply: USB interface connection Built-in Battery Capacity: 200mAh (polymer lithium battery) Battery Life: 3 years Working Environment Temperature: -10℃- +55℃ Charging Time: 2.3 hours (8 hours to fully charge for the first time, full charge can be used later) Continuous Working Time: 80 hours Standby Time: >100 days Button Life: 3 million times Effective Operating Distance: Approx. 10m / 32.8ft How e: 1. Turn on the bluetooth keyboard holster and push the switch in the upper right corner from 0FF to ON. At this time, the holster keyboard is activated, and the blue light will turn off after 3 seconds. 2. Then click Connect next to it. The blue light is on and the Bluetooth light is flashing. 3. Turn on the tablet, find-Settings-Turn on wireless and network-Turn on Bluetooth-Search nearby devices-Search for the Bluetooth keyboard name of the protective case (Bluetooth keyboard) and click Connect (Press FN+Q W E to switch the corresponding system)