The Turbo Twist from Vape Gear is a super discreet and durable palm-sized cartridge vaporizer. Designed for just about any 510 thread cartridge, you can enjoy a stealthy vaping experience just about anywhere! Preheat your concentrates with an easy and accessible 2 rapid clicks of the power button. Easily adjust the voltage to your preferred setting with an output range of 3.3V to 4.8V via the twist dial on the top of the battery. Power on the device with 5 quick clicks and choose your preferred voltage setting, preheat if you wish, then press and hold to inhale. You can charge the Turbo Twist without having to remove your cartridge by connecting the USB Charging Cable into the port on the bottom of the device. The light will indicate red when it is charging and will turn green once fully charged.