I don't know the weight of V2 with the aluminium case, my V1 has stainless steel case, weights about 150 gr!
The case is noticeable thicker than manual luminor cases, but it's not big imho, feels very comfortable on the wrist.
The movement is running pretty good, best power reserve I've ever had from an asian 7750, over 40 hours, it gains maybe 1 minute in a week!
I don't have a proper case opener for this, so I couldn't regulate it better! Duct tape ball didn't work this time
And I used a light black window tint solar film for the caseback the gen has a darkened cb crystal too