TechPowerUp posted a review on the Endgame Gear OP1we
A quote from the article:
After several iterations of their original XM1 shape, Endgame gear finally presents a new design with the OP1we. Smaller than the XM1, the OP1we comes with PixArt's PAW3370 sensor, Kailh GO optical main button switches, a weight of 58 g, and a battery life of around 60 hours.Endgame Gear OP1we Review