The first thing that strikes you about the Glorious Model O 2 Pro is its weight — or rather, its lack of weight. At just slightly over 2 ounces (59 grams), it’s one of the lightest mice on the market.

Glorious' long-running Model O series expanded again in 2025 with the Model O Eternal, a cheaper, lighter version of the beloved original that ranked as one of the best gaming mice of its day. I had ...