Product Overview. Productivity Meet Performance Optimized for both work & play the Razer Atheris is packed with features such as industry-leading signal stability dual-connectivity & over 300 hours of continuous use* all in a pocket-sized ergonomic body focused on delivering performance & productivity. * Battery life may vary based on connection type.350-Hour continuous product use on a Pair of AA Batteries* When you're constantly traveling for work or busy with back-to-back meetings you don't want to worry about replacing batteries. Which is why the Razer Atheris is engineered to give you over 300 hours* of interruption-free use.* On Bluetooth connection. 7200 DPI Optical Sensor 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. The extra resolution works perfectly for multiple monitors & even 4K screens & beyond. 2.4 GHz with Adaptive Frequency Technology* 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. * Optional 2.4 GHz dongle included..