Yocan Stix Coil Pack

I must say it is just a power source. Love this product.

This pen is great for concentrates. Nice and small and gives a damn good cloud for its size, I would recommend this pen All day long but the glass breaks easily, mine was never dropped and the tip got a hairline fracture somehow, and after I left it in my car on a +15day the whole top cracked off on its own, at least the elements are a good price to replace