Uwell Blocks Squonk Mod is powered by a single 18650 battery, supports 90W maximum output. It is built-in a 15ml e-juice bottle and features a patented juice pump on the top of the mod. Just need to pump the juice by pressing the top button. The mod also features a juice window for easy checking the juice level. The Blocks equips with a big fire button for easy to press. And it has 0.008s fast firing speed. The leak-proof 510 connector prevents the juice leaking into the mod.