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Logitech G on X: "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
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Amazon.com: Logitech G502 Proteus Core Tunable Gaming Mouse with Fully Customizable Surface, Weight and Balance Tuning (Renewed) [Video Game] : Electronics
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