Logitech Bluetooth Mouse M557 is the one mouse you can rely on to work with whichever platform you work on. Connect to any Bluetooth-enabled PC or Mac computer, or Windows 8 tablet-no receiver required. Whether youre right- or left-handed, whether you use a fingertip or palm grip, its slim, ambidextrous design is always a perfect fit. The mouse you can rely on to work with all the devices you work on. Keyboard: Black. Ergonomic design. Cordless. USB connectivity. Spill resistant. Mouse: Laser. 2 buttons. 10m range. Scroll wheel. Battery indicator light. Approximately 12 months battery life. General information: Batteries required 2 x AA . Manufacturers 3 year guarantee.