TechPowerUp posted a review on the Corsair M75 Air
A quote from the article:
To achieve its impressive weight of just 60 g, the ambidextrous Corsair M75 Air sacrifices RGB lighting. On the performance side, the M75 Air features Corsair's Marksman sensor capable of 26,000 CPI, optical main button switches, and both 2.4 GHz and Bluetooth connectivity, for up to 100 hours of battery life.Corsair M75 Air Review