Logitech G on Twitter: "In 2014, we launched the G502 Proteus Core, which became the first in a line that grew to be the best selling gaming mouse on the market. #UltimateCountdown
Logitech G502 Proteus Core Repair - iFixit
Logitech Announce The G502 Proteus Core Tunable Gaming Mouse – WGB, Home of AWESOME Reviews
Amazon.com: Logitech G502 Proteus Core Tunable Gaming Mouse with Fully Customizable Surface, Weight and Balance Tuning (Renewed) [Video Game] : Video Games
Amazon.com: Logitech G502 Proteus Core Tunable Gaming Mouse with Fully Customizable Surface, Weight and Balance Tuning (Renewed) [Video Game] : Video Games