The yocan Kodo is truly unique, I've never seen another 510 vape that delivers on everything in such a small package. The vape battery lasts a long time, multiple days typically, and charges rapidly. The adjustable temperatures and preheat modes are an added bonus. I purchased this at a head shop at crazy price, but I guess they have a wholesale connection. I wish I could find a place other then the website to buy these again, but they're not available anywhere. Quite a shame really, as this design is better then any other 510 vape available. Seriously, just try it.