FAVI FE-IBK-06-BL Portfolio Case with Bluetooth Keyboard for iPad Air (Black) Conveniently designed Folio case features a detachable Bluetooth keyboard Fully adjustable/detachable rotating stand makes it simple to setup and reassemble Scissor-switch keys are quieter and require little force to press Long battery life allows 80 hours of continual use or 70 days standby time Built-in battery is lithium ion and rechargeable Colorful options available in gold, black and silver