The Uwell Caliburn Koko is a device that uses draw activation and has an 11W maximum output. The Caliburn has a voltage output of 3.2 to 4.0V. Each Caliburn refillable pod has a 2ml nic salt e-liquid capacity and an atomizer resistance of 1.4 ohm. Each pod can use salt nicotine e-liquid and can be refilled with the removable tip. The drip tip also serves as a juice fill cover. The Caliburn Koko has a built-in 520mAh battery with 1A charging. The base of the Caliburn features a single micro USB charging port. The Uwell Caliburn Koko Pod System is a great device for the active vaper that needs a pocket-sized vaping device.