Topside Dual is the newest version of the innovative TOPSIDE Squonk mod. This device-changing squonk mod has all the innovation from the original single battery TOPSIDE but now offers more power and extended battery life. This hard hitting device offers 200W of regulated power and uses dual 18650 batteries. The TOPSIDE DUAL offers a large 10ml squonk bottle eliquid capacity (backward compatible with original topside bottle and sled), simple top filling and an easy to use interface which makes this the perfect addition to those who want more power and extended battery life.