"Most performance mice, which gamers tend to use, are normally manufactured by one of two companies: Logitech or Razer. Both these companies are widely known in the gaming industry. However, many more manufacturers, such as Genius, are making their show in the performance gaming mouse market. The contender we have for review today is the Genius Ergo 555 Laser, a 'Professional laser gaming mouse with OLED graphics effect'. Let's see how it performs."