Kanboro Tech released a truly portable E-nail device with the Subdab.  The Subdab features a removable 700 mAh 18350 battery with Micro USB charging to give you the power to take it with you. There is a replaceable ceramic cup to hold your full melt concentrates and a handy built in loading tool and dab jar.  The unit comes with a glass mouthpiece to be used by itself, or you can attach the 14mm or 18mm adapter to use with your favorite glass bubbler.