5 Low Priced FPS Gaming Mouse!remi215 | 13/01/2011 | See all remi215's reviews (1)The GM6900 optical mouse has the following DPI settings. 400 800 1200 1600 2000 2400 2800 and 3200, you can program your 3 favourite DPI settings into the mouse using the Gigabyte software. 2 buttons up top let you switch DPI settings in-game, red led's indicate which DPI setting is being used. The scroll wheel has left / right tilt, in games I like using the tilt function for quick weapon reloads. The finish on the GM6900 is a matt black plastic there is no rubber coating on the main body but it never feels slippery and looks quite nice with the Gigabyte lettering and silver side buttons. The side buttons are placed quite high but using them wasn't a problem. Directly below the side buttons is a rubberised thumb grip which your thumb falls naturally into, and is very comfortable (this mouse is for right handers only).I have medium sized hands and really like the shape of the Gigabyte, its a little shorter in length than a Razer Deathadder, a little taller when viewed from the side, and a little wider at the front. It's also lighter @106 grams. Lift-off distance is lower on the Gigabyte mouse than on the Deathadder which suprised me. I think the GM6900 optical mouse is something of a bargain, it doesn't have the build quality of a Razer Deathadder, and the click action from the main buttons is not as positive, but it's 1/3rd of the price and a definite bargin for 15 pounds (GBP).