Cobra Extracts has created a battery that elegantly combines both form and function. In our unrelenting pursuit of continuous improvement, we have found the next evolution of batteries. This is the Cobra battery and it will change the way you vape. This battery offers a convenient switchblade style push button retracting cartridge. This prevents breaking batteries while you store them in your pockets or a bag. The battery also has a direct USB charge, so you never need to use an adapter. Plug it in anywhere you can find a standard USB port. The battery is long lasting and last days/weeks between charges depending on your usage. Finally, because it looks so much like a FOB key, we added a keychain loop so you can always have to carry it with you and enjoy a vape when the mood strikes you. With 3 heat settings to choose from this Cobra Battery is the best available on the market.