Super Slim Leather Bluetooth Wireless Keyboard Case Cover for 8&rdquo; iPad Mini2/3/4 and Compatible with Android or Windows Tablet PC . Ultra-slim Bluetooth keyboard 8 Leather Case Cover . Suitable for 8 iPad Mini 2/3/4 . Compatible with 8 Samsung/ Window Tablet PC . 60 days standby time and 90 hours working time . Built-in 160mAh Li cell rechargeable battery