Logitech M170 has strong & consistent wireless connection from distances up to 10 m away. With virtually no delays or dropouts, youll work & play with complete confidence. Just insert the receiver into a USB (Universal Serial Bus) port on your computer & begin using it right away. There is no need to pair the mouse or to download software in order to begin using it. It is really comfortable & mobile. The shape of the mouse supports your hand for hours of comfortable use. Reliable 2.4 Ghz wireless Strong, consistent wireless connection from distances up to 10-meters (33-feet) away. With virtually no delays or dropouts, youll work & play with complete confidence. Tested to 10 meters, the wireless range may vary slightly based on your computing conditions & environment 12-month battery life Work for up to a year between battery changes. To extend the battery life, use the On/ Off switch power off when not in use. Your battery life experience may vary slightly based on your computing conditions & how you use the mouse. Comfortable & mobile The shape of the mouse supports your hand for hours of comfortable use. The ambidextrous shape & the ability to reassign right & left button functions make M170 the ideal mice for the right or left h&.