The Dovpo Topside Squonker Mod, which is the collaboration between dovpo and vapor chronicles. made of high-quality zinc alloy and aluminum alloy material, black and red colors available. it built-in 10ml food grade silicone e juice top fill squonk bottle and can refill the e juice from the top side. vapers only screw off the top cap and inject the e juice from holes, no leaking worry, and very convenient. the topside mod powered by single 21700 battery and max output 90watts, supports resistance as low as 0.08ohm, variable working modes available, it supports variable wattage, bypass and Temp Control Modes(Optional).it adopts one 0.96 inch OLED screen, will show vaping data clearly, battery life, resistance value, working modes, working voltage etc. the ergonomically designed round fire button and UP/Down buttons allow the operation more simply, feeling more comfortable. the push-to-open battery door allows vapers to replace the battery easily, the gold-plated 510 spring-loaded thread with leak resistant design, recommend works with other BF tanks. recommend the hellvape drop read RDA or wototo profile mesh RDA, will bring you the better vaping experience.