Guardian One by Vaporesso adopts dual child locking mechanism that prevents children from accidentally opening the tank and get in contact with the liquid inside. It is truly a carefree filling since the coil would remain inside to avoid overfill. With its unique leak resistant strucutre, you can rest assured to enjoy vaping with clean hands. The mod itself is compact in design, yet capable of 40 wattages of output. Built with CCELL ceramic coil inside, it is guaranteed to deliver the most original flavor of your (e)-liquid. Guardian One, the One for your vaping journey!