The Dovpo Topside Dual is a highly regarded dual-battery squonk mod. It features a 10ml squonk bottle capacity and utilizes dual 18650 batteries (sold separately) for extended battery life. The mod is constructed with durable materials and includes an innovative top-fill design, making refilling the squonk bottle a breeze. It also offers various output modes, a large OLED display, and firmware upgradeability.