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 is back with one of the most standout gaming mouse launches this year. Rather than pursuing pure performance and an ultra-light weight, the company has instead focused on making a mouse that ...