Flux core wire?

I have a Holbort auto-darking helmet that I bought on clearance at tractor supply for $20. I wish at the time I would have bought two of them.
Don't know why it was on clearance because they still sell it, in less the price was marked wrong, but it nice, and it has solar powered batteries.
I have had it for about 4 years now and it has worked flawless, except for the time I left it covered up for about 6 months, and the battery charge went dead.