Logitech 910-004656 M171 Wireless Mouse, Blue, 2.4 GHz Wireless, Right Hands, Optical, Battery1 x AA, Battery life 1 year. Logitech M171 Wireless Mouse Blue (910-004656) Strong, consistent wireless connection from distances up to 10-meters (33-feet) away. With virtually no delays or dropouts, you work and play with confidence.