TechPowerUp posted a review on the Pulsar Xlite Wireless
A quote from the article:
Aside from introducing wireless functionality, the Xlite Wireless also comes with updated Kailh GM 8.0 main button switches and larger pure PTFE feet. Weighing just 59 g, the Xlite Wireless nonetheless has up to 70 hours of battery life owing to PixArt's PAW3370.Pulsar Xlite Wireless Review