I had my KR808D e-cig sitting on my desk the other day. It's a long white battery (105mm) with a black cartomizer. I've also got a clip from a mechnanical pencil attached so it doesn't fall out of my pocket. A co-worker came into my office, picked it up, tried to write with it and proceeded to tell me my pen was broken. So if you want an e-cig that doesn't stand out at all, this could be the way to go.