If you play games like Counter-Strike: Global Offensive and League of Legends, you would know the importance of a mechanical gaming keyboard and comfortable gaming mouse. Preferably, a gaming mouse with programmable buttons and zero hardware acceleration for accuracy and quickness ingame is what you want.
The SteelSeries Rival 100 gaming mouse ticks all of the above plus it has great build quality, a 6-button layout, a solid accurate sensor (3059-SS optical gaming sensor) and good ergonomics.
The scroll wheel has very distinct notches; while the mouse clicks are firm but soft and responsive with quiet short-travel clicks
The Rival 100 has 8 CPI steps up to 4000 with mouse acceleration of 20Gs, tracking speeds of 143 inches per second (IPS), 1 MS polling rate and 1:1 tracking accuracy.
The 1 MS polling rate of the Rival 100 is specially good and one of the reasons that makes the Rival 100 a good gaming mouse. To give you an idea, a gaming mouse with a polling rate of 4MS (250 HZ) means the mouse only reports to the computer 250 times per second.
The 1 MS polling rate value of the Rival 100 means, the Rival 100 gaming mouse polls at 1000Hz so the Rival 100 mouse reports to the computer 1000 times per second, which is especially great for games like Counter-Strike: Global Offensive.
If you are a right-handed gamer with standard size hands, the Rival 100 has a nice compact size with comfortable side grips made of durable plastics.
The Rival 100 has a matte finish on top with a SteelSeries logo that lights up and mouse feet skates on the bottom that help the Rival 100 glide smoothly on the mousepad.
As mentioned earlier, the Rival 100 has 6 programmable buttons and one of the buttons is set for adjusting sensitivity, though you can further customize the sensitivity of the Rival 100 gaming mouse by downloading the Steelseries Engine 3 software, which will allow you to change the Rival 100 DPI and lighting color, as well as remap all 6 buttons. Check out the Steelseries Rival 100 Optical RGB Gaming Mouse. Check out the review of the Apex 5 mechanical keyboard.
Rival 100 Dimensions

• Weight: 120 g, 0.264 lbs
• Height: 120.6 mm, 4.75 in
• Width: 67.13 mm, 2.64 in
• Cable Length: 1.8 m, 6 ft