Logitech M185 Wireless Mouse - Blue 910-002236 Brand_Port Designs Mean time between failures (MTBF):

Mean time between failures (MTBF): 360000 h

Logitech MK270 Wireless Keyboard and Mouse Combo

Battery technology: Alkaline

An included application stencil and spreader take the guesswork out of applying XTM50 to your CPU cooler

there is space and pockets for everyday stuff – your valuables

Logitech M185 Wireless Mouse - Blue 910-002236 Brand_Port Designs Mean time between failures (MTBF):Logitech M185 Wireless Mouse Blue Features A simple, reliable mouse with plug and play wireless. Reliable wireless. No delays or dropouts. The tiny wireless receiver gives you a connection you can count on. All year power pack. With 12 months of battery life, you dont have to deal with the hassle of frequent battery changes. Built to last. Youll enjoy the high quality and reliability Logitech is known forplus a 3 year limited hardware warranty.