A blu vape device simulates the smoking experience without the ash or lingering smell. There are two main components: a vape battery, plus either a refillable tank or exchangeable liquidpod depending on whether you have an open-system or closed-system device. When you press the button on our blu PRO device, or draw on the blu2.0 device, the battery is activated. This action heats up the liquid, which is then converted into a vapour. You inhale and exhale this vapour.