We should cut FM some slack. They seem like a small start up so they may not have the resources and invested research compared to competitors in this market for decade(s). Looking forward to seeing the scream design to see how much of the community's feedback FM will actually use.
However, advertising a products mass that is off by ~15% cannot be justified! The mouse is light already so just come clean with its actual mass
Why do they deserve slack for $70 mice without full sensor functionality and no interest in doing fimware updates. They've ignored most of the feedback and it's blatant their marketing plan is more important than anything else. Don't worry all the saps here are going to buy the Scream One when it comes out for the PMW-3360. Next year they'll buy the Scream Two for another $70 as it will be 1g lighter with magic firmware improvements.