The Sentinel Advance II offers nine buttons or functions out of the box, eight of which are programmable and the one that isn't offers a Tactics (TX) button, much like the EasyShift+ button from ROCCAT. For the right and left click buttons, they are backed with Zhij switches while small Omron switches are placed under the smaller buttons around the mouse. The old laser sensor was replaced with an Avago ADNS-9800 laser sensor capable of registering movement at 150 inches per second with forces near 30 Gs as it delivers precision with its maximum of 8200 DPI. Things that have changed are mainly on the inside. Even the logo can be personalized within the software package. Nestled in the middle of everything on top of the mouse is a little OLED screen that denoted the X and Y DPI levels as well as a CM Storm logo. There is also lighting in front of the mouse as well as the top which can be controlled separately with the included software. It has nine buttons consisting of the forward and back page buttons on the left, the right and left click buttons on top with two DPI buttons and a profile button on either side of the scroll wheel. The Cooler Master CM Storm Sentinel Advance II is grey with black trim, made of plastic and offers a thumb rest and an ergonomic area for your ring and pinky fingers.

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