Apple A1255 78-Key Layout Wireless Bluetooth Keyboard MB167LL/A. The Apple Wireless Keyboard requires just three AA batteries.

Part Number: MB167LL/A
Model Number: A1255
Compatible Models: eMac (2005) iMac (17-inch Late 2006 CD) iMac (17-inch Late 2006) iMac (20-inch Early 2008) iMac (20-inch Early 2009) iMac (20-inch Late 2006) iMac (20-inch Mid 2007) iMac (24-inch Early 2008) iMac (24-inch Early 2009) iMac (24-inch Mid 2007) iMac (24-inch) iMac (Early 2006 17-inch) iMac (Early 2006 20-inch) iMac (Mid 2006 17-inch) iMac G5 iMac G5 (17-inch iSight) iMac G5 (20-inch iSight) Mac mini (Early 2006) Mac mini (Early 2009) Mac mini (Late 2006) Mac mini (Mid 2007) Mac Pro Mac Pro (Early 2008) Mac Pro (Early 2009) MacBook (13-inch Aluminum Late 2008) MacBook (13-inch Early 2008) MacBook (13-inch Early 2009) MacBook (13-inch Late 2008) MacBook (13-inch Mid 2009) MacBook Air MacBook Air (Late 2008) MacBook Pro (15-inch Early 2008) MacBook Pro (15-inch Glossy) MacBook Pro (15-inch Late 2008) MacBook Pro (17-inch Early 2008) MacBook Pro (17-inch Early 2009) MacBook Pro (17-inch Late 2008) Power Mac G5 (Early 2005) Power Mac G5 (June 2004) Power Mac G5 (Late 2004) Power Mac G5 (Late 2005)