Description:Beat the rival in the games accurately and quickly in the games, this E - 3LUE M639 gaming mouse will be your best partner to bring you powerful performance.Adjustable DPI will improve your level, and LED light and crack design makes your night more fantastic.The mouse's grip accommodates any holding type of players, making it suitable for all types of video games.Like most of the gaming mouses, the M639 mouse comes with dedicated customization software, you may change the functionality of the buttons to design your own mouse.Personal tweaks make all the difference. Customize a special mouse that feels just right for you.Features at a glance:- 5-level adjustable resolution, provides 500 / 1000 / 2000 / 3000 / 4000DPI- Provides 125 / 250 / 500 / 1000Hz return rate- With colorful LED lights, controlled by the DPI button- Supports 6 programmable buttons, makes your own special mouse- The rubber scroll to control accuratelyPerfect gaming partnerWith the 5-level adjustable resolution, which is up to 4000DPI, zero smoothing or filtering for consistent responsiveness and control at any speed, switch quickly so that you will make a great performance in games. With a cool cracked appearance, LED light makes you have a wonderful gaming enjoymentMake more specialSupports 6 programmable keys, you will make a basic setting, advanced setting, breathing LED setting, customizes whatever you like and to do a one of a kind mousesAdvanced optical sensorGet maximum tracking accuracy from our most responsive optical sensor. Exclusive optical sensor technology minimizes mouse acceleration and increases reliable targetingPerformance parameter:- Button life: 5 million times- Resolution: 500 / 1000 / 2000 / 3000 / 4000DPI- Return rate: 125 / 250 / 500 / 1000Hz - Macro programming: supported- Keys programming: supported- Supported OS: Windows 2000 / ME / XP / NT / Vista / 7 / 8- Cable length: 1.5m Brand: E - 3LUE 0.2570 Package weight: 0.294 kg Product Size(L x W x H): 13.30 x 7.20 x 4.00 cm / 5.24 x 2.83 x 1.57 inches Package Size(L x W x H): 15.50 x 11.00 x 4.75 cm / 6.1 x 4.33 x 1.87 inches Package Contents: 1 x Mouse