Shout your inner retro out loud with a bold combination of black, grey, and arcade game yellow. Make a performance with Pop Keys in Blast. This set contains a Logitech Pop Keys Wireless Mechanical Keyboard with Customizable Emoji Keys for Windows and Mac (Blast Yellow), 2 Aaa Batteries (pre-installed), a Logi Bolt Usb Receiver, 4 Extra Emoji Keys, User Documentation, and a Limited 1-Year Warranty.