Elite enthusiasts accuracy up to 5000 dpiThe world"s top 5000dpi laser engine, x and y axis independently adjustable 200 - 5000 DPI variable speed function. At any speed can be accurate to the pixel tracking - 1000 times / second speed refresh rate. Response time of 1ms while the response time of the traditional gaming mice 125Hz/8ms.Rapoo patent front engineRapoo unique front engine-type mouse structure, let you move in the same wrist for greater distance range of the mouse cursor, giving you the competitive advantage of defeating the enemy.Weight tuning system4.5 grams 3 grams of metal weights you can mix and match a variety of different weight, to fit your wrist fatigue get the best gaming mouse feel.Up to 7 custom buttonsV3 as much as seven custom button allows you to easily get your own gaming experience, people can quickly achieve the goal of first class. 7 customizable buttons, allowing gamers to program and provide the best gaming experienceBuilt-in memory, plug and playBuilt-in memory and driver software panel, the mouse can save the configuration files of different games (including key distribution,the mouse button assigned to keyboard commands, DPI settings, etc.) you can enjoy.Configure the mouse that these configurations in the absence of software support of the right mouse is still valid; regardless of which platform PC, the mouse will be to work the way you expect.On conclusion rapoo V2 is more than worth for its price of 55$.