With the already dominant TFV 12 Prince, comes the release of an upgrade of the Beast Tank, the SMOK Prince Tank. This device features a top locking hing e-juice lid so the devices lid won't cause those nasty juice stains in your pocket and with the Prince holding 5ml (or 5.5 ml of juice with the Bubble glass), The Smok is awesome tank to fill your ejuice and vaping needs.