Fintie Made for Amazon Bluetooth Keyboard with detachable case in Black, for Fire HD 10 (11th Generation) 2021 release. Box was opened but never used. Details from Amazon listing: Design: Instantly transforms from a wireless keyboard, into a sleek cover. This Bluetooth Keyboard Case features durable protection, adjustable viewing angles and attaches magnetically. Protection: Upper protective cover is made of polycarbonate material coated with durable PU leather, which allows full access to all ports, sensors, speakers, microphone and cameras. Productivity: Suitable for Home, Office or School use. Perfect for typing emails, note taking, document writing and web browsing. Adjusts Instantly: Seamlessly detach the keyboard or adjust your viewing angle to customize your viewing experience when watching videos, viewing photos, typing and more. Auto Wake and Sleep: Instantly wake your Fire HD 10 (11th Generation) when you open the cover and send it to sleep mode when you close it. The keyboard will also enter its own sleep mode after 30 minutes of inactivity - simply press any key to wake the keyboard up again. Battery Life: Up to 400 hours use per charge. Standby: 365 days. Included Inbox: Keyboard with detachable case, USB-C Charging Cable Compatibility: Compatible with Fire HD 10 (11th Generation) & Fire HD 10 Plus (11th Generation) and Fire HD 10 Plus Wireless Charging Dock. 2021 releases.