Introducing the Top Twist by STRIO – the ultimate solution for all your vaping needs. The Top Twist is the most discreet and user-friendly vape cart pen battery on the market today. With its revolutionary top-mounted controls, you can easily control your vaping experience with just one hand. The Top Twist is designed for those who demand the best. It features a powerful 650mAh battery that ensures long-lasting battery life, so you can keep on vaping without worrying about running out of battery. The Top Twist also comes equipped with a powerful preheat function that helps prevent clogs, making it perfect for thick cannabis oils. Charging your Top Twist is easy thanks to its lightning-fast micro-USB charge port. With the Top Twist, you can vape while charging, so you never have to wait to start your vaping session. And with variable voltage settings ranging from 3.3V to 4.8V, you can customize your vaping experience to your liking. The Top Twist is built to last with its solid and sturdy design. It fits most 510 thread 1g vape carts, making it easy to use with your favorite cartridges. And with six distinct colors to choose from, you can find the perfect match for your style. But what really sets the Top Twist apart is its revolutionary top-mounted controls. All primary controls are located on top instead of the bottom, making it easy to use with just one hand. And with its sleek and stylish design, the Top Twist is the perfect accessory for any vaping enthusiast. The Top Twist is super user-friendly, making it the perfect choice for both novice and experienced vapers. Its solid and sturdy construction ensures that it can withstand the rigors of daily use, while its discreet design makes it perfect for those who prefer to keep their vaping habits private. Whether you're at home or on the go, the Top Twist is the ultimate solution for all your vaping needs. Its compact and portable design makes it easy to take with you wherever you go, while its powerful battery ensures that you can enjoy your favorite oils for hours on end. The Top Twist by STRIO is the perfect solution for anyone who wants a discreet, user-friendly, and high-quality vape cart battery. With its powerful battery, preheat function, lightning-fast micro-USB charge port, and variable voltage settings, the Top Twist is designed to meet all your vaping needs. And with its revolutionary top-mounted controls, the Top Twist is sure to be your go-to 510 thread vape pen battery. Get your Top Twist today and start enjoying the ultimate vaping experience!   Features: 650mAh Primary controls on top of device, you can now smoke while charging! 2-click preheat function Voltage range 3.3V to 4.8V 6 colors to fit every mood Solid and sturdy design Cartridges not included* Usage Instructions: Click 5 times to turn on or off Click 2 times to preheat Click 1 time to end preheat cycle Device will automatically turn off once fully charged Twist mechanism varies voltage from 3.3V to 4.8V   Please note these usage instructions for your new device: 1. Do not charge any vape batteries with a cart attached. Electronics can heat up while they're charging and it could cause the cart itself to leak into the device. 2. Always preheat any vape battery before use. Whether this be with a new cart or used, this makes the concentrate more viscous and easier to vaporize by the device.  3. Make sure to not exceed 90 minutes on a charger. The batteries themselves are small and don't take much time to fully charge.