E-Stand Folding Leather Protective Case with Removable Bluetooth Keyboard for Samsung Galaxy Tab S 8.4, Black (SA-TAB-S-8-BLK) Removable wireless Bluetooth 3.0 ABS Keyboard Converts from case to display stand for easy viewing Built-in rechargeable lithium battery that lasts approximately 45 hours per charge Energy saving auto sleep mode with idle longer than 10 minutes Front and rear-facing camera holes Special function keys for volume control, media playback, photos, search, etc.