The Joyetech eGo AIO combines a built-in tank and battery to create this simple to use "All-in-One" design. The AIO features Cubis Leak-Resistant Cup technology, a top fill tank, Micro USB charging, and child-lock technology. The indicator light can be switched to red, yellow, green, blue, indigo, white, or purple to match your own personal style and preferences. The Joyetech eGo AIO is perfect for beginners looking to start vaping without being overwhelmed!