TechPowerUp published a review on the Sharkoon Light 100
A quote from the article:
The Sharkoon Light² 100 is the budget version of the Light² 200. Sporting the same shape, PixArt's PMW3325 sensor, and a weight of 78 g, the Light² 100 at just $24.99 only costs half as much as the Light² 200.Sharkoon Light 100 Review