Natural Hand Position: The natural hand position of the wireless mouse reduces muscle strain by 10% compared to a standard mouse thanks to its functional design Better Wrist Position : The ergonomic and vertical mouse by Logitech features a unique design with an angle of which reduces pressure on your wrist to bring more comfort When Ergonomics Meets Performance: This wireless ergonomic mouse compatible with your PC or Apple computer has been designed and tested according to the criteria defined by leading ergonomists to reduce muscle tension Less Hand Movements: The high-precision optical sensor of the Logitech vertical mouse requires less hand movement and thus reduces fatigue. Also soft to the touch, the Logitech mouse is designed to fit many hand shapes and sizes Quick Charge: The rechageable wireless mouse lasts up to four months on a full charge and can work for up to three hours after just one minute of charging Easy-Switch and Compatible: Easily connect up to three devices and