Back to the basics with the awesome slim VX Buttonless Vape Pen Battery kit that comes with a simple yet ultra-reliable pull through auto draw 510 battery perfect for vaping most 510 thread carts in a buttonless fashion. Just Screw the cartridge on and inhale makes this slim battery simple to use and effective. Don't let the nano size fool you this sleek and slim battery delivers on power and capacity making sure your not always hooked up to a charger. The kit has everything you need to get started with the battery, charger, and 2 cartridges ready to fill with your favorite oils. The buttonless vape pen style, is really what started cannabis oil vaping and the classic design has been improved to offer smooth hits and great reliability for those that want an auto-draw or buttonless battery that just works.