... and spill-proof. Bluetooth 3.0 interfa Case Cover With Bluetooth Keyboard for iPad2Bluetooth keyboard Product Features: 1, Bluetooth 3.0 interface ... . Humidity: 20%~50%. 6. Energy saving keyboard with sleep mode. Specifications 1, Executive standard: Bluetooth V3.0 2. Working ... away from oils, chemicals or any other organic liquids. 6. Clean the silicone keyboard with water, alcohol, or alcohol ...