21-key wireless (Bluetooth) keypad for easy and fast working figures, tables, calculations and spreadsheets. Aluminium upper cover with black key matches your MacBook or MacBook Pro perfectly.Keys include 0-9, operation keys including the “=” sign, decimal keys, clear/numlock, tab, delete forward and delete backward. Supports Mac OS X and Windows OS Scissor-type membrane keys for high comfort typing and reduced typing tiredness. Broadcam 3.0 Bluetooth chipset, Bluetooth wireless technology for convenient wireless access to any Bluetooth-enabled computer, no dongle or driver installation required, Lightweight and easy to carry along with your laptop. o 21-key wireless (Bluetooth) keypad for easy and fast working figures, tables, calculations and spreadsheets o Aluminium upper cover with black key matches your MAcBook or MackBook Pro perfectly o Keys include 0-9, operation keys including the “=” sign, decimal keys, clear/numlock, tab, delete forward and delete backward