Original Kanger Slim Electronic Cigarette E Smart Kit 320mah Battery Double Starter Kit Kangertech E-Cigarette Kit. E-smart clearomizer can fit with 808 and 510 threading. perfect appearance, high-quality products! E-smart batteries featureda 5 click on and off that prevents them from being activated when not in use. There is CE and WEEE label in the batteries. So buy this Original Kanger Slim Electronic Cigarette E Smart Kit Just $26.99.