[This review was collected as part of a promotion.] Thanks for the upgrade, Logitech! I was using the Logitech G502 Hero which I absolutely love but when I received the Pro X Superlight I was blown away by how light it is - under 63g. The shape of the Pro X Superlight fits comfortably in your hand during long gaming sessions. I personally found the battery life very good, I get approximately 3 weeks of charge with an average use of 5-8 hours a day. The mouse is very responsive and delivers smooth precision during split second decisions when playing my favorite MMOs and shooters. I also was surprised by how robust the connectivity was - I never disconnected once like I have with previous wireless devices. I am also impressed with Logitech being innovative and sustainably minded by producing a product that is fully carbon neutral certified. Big thumbs up!