Wireless Slim Keyboard features an integrated volume control wheel to allow easy volume control and 16 hot keys for Media Play, Internet browsing and PC functions. The Media Player functions include stop, play/pause, previous, next, volume mute. Internet browser functions are refresh, stop, back, forward, home, and My Favorites. PC functions include open mail client, hibernate/sleep, search, My Computer, My Documents and calculator. Ultra-slim keyboard includes a wireless mouse. System requirements include Windows XP, Windows 2000 or Windows Vista.