The Dovpo TopsideLite Kit is a collaboration between Brian from TVC (aka The Vapor Chronicles) and Dovpo which is the world's first top-fill squonker. Itis also the most innovative squonk mod in the main vape market until now due to the simpleness of filling up the bottle from the top. Topside Lite Kit consists of Dovpo Topside Lite Mod and Variant RDA. This device supports squonk mod and standard mode(can hold one battery), you can install the squonk attachment to make it as a squonk mod or a standard mod. The unit is powered by a replaceable 21700 battery or 20700 battery with max output 90W power. There is a 0.96inch OLED screen.