The original DARK CORE was one of our favorite mice hands-down, thanks to the comfortable shape, good tracking sensor, but we have had some issues regarding the wireless dongle. The revised model now operates with SLIPSTREAM WIRELESS technology while using the new adapter, the PixArt PAW 3392 optical sensor has a resolution of up to 18000 DPI and was also fine-tuned for low power consumption. We have used the mouse for gaming in titles such as Dying Light, StarCraft 2, Beyond Two Souls and Resident Evil 2, but also for productivity work such as writing articles, editing video files, searching the web for certain documentation and so on…from a single charge we have obtained about 34 hours with the RGB LEDs turned off, which is awesome!