My Waida flask is still going strong after having it a few weeks.
My only complaints are that it marks and scratches up pretty easy, mine is a silver one and it has a few scuff marks on it already, nothing major but it did not take much to get the marks on it, the finish seems to scratch rather easily.
Also when I have around 1/4 battery left it starts to not fire at the wattage it is set at, say I have it set for 36w it may only fire upto 29-30w, like it is struggling to apply the full wattage, a change of fresh
batteries fixes it up but I don't think it should be doing it. I usually change out the battery at 1/4 because of this but they are usually still at around 3.6v when this happens and I get the weak battery display when they are around 3.5-3.4v, could this be because of the bad grounding in these flasks? I think with 3.6v still left on it it should still be able to fire at full wattage? Just
throwing it out there to see if anyone has any ideas.
Cheers.