Key Features. 350-hour continuous product use on a pair of AA batteries 7200 DPI optical sensor 2.4 GHz with adaptive frequency technology A 280-hour battery life for fuss-free work on the go. When you’re constantly traveling for work or busy with back-to-back meetings you don’t want to worry about replacing batteries. With a 7200 DPI optical sensor the Razer Atheris has one of the highest DPI for a mobile mouse. It gives you extreme accuracy & incredible control over spreadsheets or headshots. Adaptive Frequency Technology for reliable signal stability. Featuring Razer’s proprietary wireless technology the Razer Atheris provides you with industry-leading transmission stability. So whether you’re in a café or the office where multiple wireless devices may interfere with the frequency your mouse maintains a solid connection. Improved ergonomics for endless hours of comfort. Designed with enhanced ergonomics the Razer Atheris offers an incredibly comfortable hold that feels great in your hand even for extended hours..