SIIG Wireless Ergonomic Dura-Duo Keyboard and Mouse Combo, 24GHz (33 feet) Long-Range, Water-Resistant, for Windows 10/8/7 or Mac BUILT TO LAST - Featured with a spill-proof membrane to protect the keyboard from liquid spills, offering you a peace of mind. Built-in weighted metal bottom panel provides extra stability and durability, allows you to work in different working environment. EFFORTLESS TYPING - Membrane key switch provides you with a smooth and tactile feedback, enhancing the typing experience. 104-key QWERTY keyboard layout with 12 function keys allows easy and quick access to media control, web and email. ERGONOMIC DESIGN - Ergonomically designed mouse for neutral hand and wrist position, with thumb grip intergrated to maximize comfort. Sleek and unique design brings a trendy look to your workspace. 4-button scrolling with 3-level adjustable optical resolution (1600/1200/800 DPI) for smooth and precise movement. LONG WIRELESS RANGE - Connects both the keyboard and the mouse via the ultra compact USB 2.4GHz Nano wireless unifying receiver, with up to 33ft (10 meters) wireless working range. Ultra compact receiver allows you to left on your computer's port, or insert the receiver back into the built-in compartment in the mouse for on-the-go uses. POWER SAVING: Automatic power saving mode with extra low standby power consumption dramatically prolongs battery life of both keyboard and mouse.