The Twist Slim 2.0 has a sturdier feel that has more weight in your hand, and immediately tells you it’s a quality device. This new model has a more streamlined silhouette. The collar that used to hold the threading at the top of the battery is now flush, making it look longer despite only being 1cm taller than the 1.0 version. The flex temp dial on the bottom has also been updated. We lowered the voltage slightly, with a new range from 2.0V to 4.0V. This hits more of a sweet spot with pods that are notorious for burnt heating elements.