Spigen KIPM4W iPad Mini 4 Keyboard Case with Bluetooth Wireless Connection for iPad Mini 4 / Only compatible with 2015 iPad Mini model Perfectly designed for Apple iPad mini 4 released on 2015 September. The keyboard case is not compatible with iPad mini 3/2/1. Power-saving mode triggered after 10 minutes of inactivity; Rechargeable lithium battery gives keyboard up to 60 hours of continue usage on a single charg Elegant design with a rubberized matte texture and a brushed aluminum piece High-quality hard clamshell case provides full-body protection to keep your iPad free from scratches, wear and tear; Full access to all ports. Ultra-low profile Bluetooth keyboard with optimized key design for comfortable typing experience