Logitech Wireless Mouse M325s. A better mix of precision and comfort-with designed-for-Web scrolling. Designed for how you use the Web, our newest micro-precise scrolling makes everything you love to do online easier. Its feel-good, contoured shape and textured grips help keep your hand happy-even after long hours. And with up to 18 months of battery life, it virtually eliminates the hassle of changing batteries.