ZAGG Folio Case, Hinged with Bluetooth Keyboard for Android Tablets (10-inch) - Black Plastic Adjustable: Asmart spring-loaded cover fits popular 10", Android tablets. Multi-Angled: Its unique hinge offers 135 degrees of viewing angles, just like a laptop. Protective: Its folio design offers full-body protection and is super portable. Powerful: The rechargeable battery delivers up to one year of regular use (of one hour per day) on a single charge. Spacious: Designed with up to 30 percent more typing area than most tablet keyboards for increased comfort and efficiency. See product description for complete compatibility list also refer user manual for troubleshooting steps.