The Uwell Caliburn is a refillable pod system with a rugged and lightweight aluminum construction that is small enough to fit in your pocket. The Caliburn offers a simple interface making it easy for new vapers to operate while still provides an excellent vaping experience. The 520mAh internal cell charges via micro USB, and delivers a maximum output of 11W. The 2mL refillable Caliburn pods have a mouth to lung draw with medium tight restriction, and the 1.4Ω built in parallel coil produces a thick and flavorful, but relatively small vapor cloud – ideal for use with nicotine salt e-liquids. The Caliburn has a battery indicator light that clearly displays the charge level: Green > 60% > Blue > 30% > Red. The Caliburn is a dual firing vape kit, with a single operating button that turns the device on and off and fires the coil, and a secondary draw-activated mechanism that offers a vaping experience that s similar to smoking a cigarette.