The Kanger UBOAT features a submarine inspired design with a smooth and lightweight construction designed for vapers on the go or simply looking for an easy to use device. The Kanger UBOAT is a throwback to the old school style automatic batteries with a new modern design. The UBOAT features no buttons and is automatically activated when you inhale. The UBOAT features a built-in 550mAh battery in a lightweight and compact design. The UBOAT utilizes a 2.0ml pod cartridge system with a ceramic 1.5ohm coil that works great with 50%VG / 50%PG e-liquid. The UBOAT also includes a convenient USB charging dock to recharge your device.