Top - Baby eGo 350 mAh with 1.7 ohm Single-Coil Smoktech Shorty Cartomizer Bottom - Vision V3 Rebuildable Clearomizer (shown for size comparison) At precisely three inches long, the PV above is perhaps my new favorite pocket tool for conducting clandestine vaping sessions while at work...strictly a no-smoking zone. Not wanting to get shot down before even explaining that I wasn't technically "smoking", I decided to keep my vaping on the sly to avoid confusion (and preserve job security).