RandM Digital Box 12000 is a vape device with battery and ejuice level display and it is rechargeable. It contains 20ml 0/2/3/5% nicotine salt e-juice and vape up to 12000 puffs. There are 16 flavors for you to choose. The battery and ejuice displayl let you track the real time status of the device plus it comes with a rechargeable Type-C port at the bottom of the device, which guarantee you finish the last drop of the e juice in the tank all the time.