Get the most from your carts with the Sunakin Ray510! Featuring a durable stainless steel body in its compact size, only 28mm (1.1") long, so it fits perfectly in pockets and bags, but its 320mAh battery with integrated safety protections still has lots of power! Like it's namesake, it runs all types of 510 threaded cartridges, just turn clockwise to attach a cart to the spring loaded 510 connection. Press 5x to power the Ray510 on and off. Press 3x to cycle voltage between 2.7V (Green), 3.2V (Blue), 3.7V (Yellow), and 4.1V (Purple). Cold start? Press 2x and the Ray510's preheat function will heat your cart at 2.7V for 10 seconds. Featuring fast and easy charging with a durable bottom-mounted USB-C port, the Ray510 is always ready to vape with its vape-while-charging feature.