TechPowerUp published a review on the MSI Clutch GM31 Lightweight Wireless
A quote from the article:
Aimed at budget-minded gamers, the $69.99 GM31 Wireless even comes with a dedicated charging dock. Wrapped in a 72 g, right-handed ergonomic package, the GM31 Wireless is also equipped with PixArt's PAW3311 sensor, Omron main button switches, and pure PTFE feet.MSI Clutch GM31 Lightweight Wireless Review