They are, afaik... #2 died in a frwak accident a month after I got it... The se red and black. It fell on an open case of soda, punctured a can, and got coca-cola sprayed into the cooling vent.
... My first one took some serious abuse.
Dropped several times from 3-4 feet onto concrete. I'm think it's a loose wire, as it happened as I was vaping. Pulled it outta storage, fired it up, worked great for 5-6 weeks, then as I was puffing happily away, it said short circuit... Changed the coil, read fine, went to glow it, and now it reads at 0.006ohm... not sure if it's the board, but I have two duds to try and make one nice mech squonker outta if I can't get replacements. If I can, happy dance!