TechPowerUp published a review on the Pulsar X2 Mini
A quote from the article:
As the name suggests, the Pulsar X2 Mini is a smaller X2. Weighing 54 g instead of 56 g, the ambidextrous X2 Mini is otherwise identical: PixArt's latest PAW3395 sensor, Kailh GM 8.0 switches for the main buttons, pure PTFE feet, and up to 70 hours of battery life.Pulsar X2 Mini Review