TechPowerUp published a review on the ASUS TUF M4 Air Gaming Mouse
A quote from the article:
The ambidextrous TUF M4 Air is the first ASUS mouse to feature externally visible holes. The result is a weight of just 49 g. Equipped with PixArt's PAW3335 sensor, pure PTFE feet, and a flexible, paracord-like cable, the M4 Air goes for very competitive $49.99.ASUS TUF M4 Air Gaming Mouse Review