Technical specifications sensor technology darkfield laser sensor nominal value 1000 dpi minimal and maximal value 400 dpi to 1600 dpi can be set in increments of 200 dpi battery life up to 2 months on a single full charge based on a 6 hour daily office use battery life may vary based on user and computing conditions battery rechargeable li po 500 mah battery wireless operating distance 32 ft 10 m wireless technology advanced 24ghz wireless technology optional software lo