Zotech Ultrathin Bluetooth Wireless Keyboard Aluminum Cover with Stand for iPad 4 / 3 / 2 - Black Low battery alarm function. Standard 13 inch keypad. Ergonomic keyboard shape design Charge up in 2 hours and enjoy 100 hours of uninterrupted use. Super power saving mode. The built-in groove and stand, constructed out of durable plastic and metal, firmly hold your iPad mini in place for secure, easy viewing.