Slender, slick, and full of power, the KandyPens Slim battery lets you stay in charge while vaping on-the-go. A USB charger will power up the KandyPens Slim quickly and conveniently. The KandyPens Slim battery features buttonless functionality that only heats waxy oils when you draw from the KandyPens Slim. The universal 510 threading is compatible with the KandyPens Slim or any 510-threaded tank. A slim design is easy to grip and secret away into your pocket. The KandyPens Slim Battery is ideal for wax vaporization that’s stealthy and convenient.