I guess there really is an e-cig called a 502, maybe at the time I was reading up on it when I made my first post at the top of the page. Looks like this a newer version of the 502 (called a 502E now). It is for sale on tradekey and i've seen it on other websites from China. The supplier is a company called "WiWu coKoo Co.". I'll post the link in a seperate message, as I'm not sure about the forum rules, but I copied the specs (in si units) below:
Mini Cigarette
1] length = 84mm
2] Weight for single cigarette = 8.6g
3] Mouthfuls for each cartridge keep = 100 mouthfuls ??
4] Nicotine content for each cartridge (compare to traditional cig) = 7 cigs
5] Battery spec = 100mAh
6] Normal working voltage = 2.8 - 4.2v
7] Charge time = 1.5hrs
8] Life of battery = 300 charges
I tried to translate this from the broken English on the site
It looks pretty cool, resembles a blu or a volcano, but it looks like it maybe a newer design (maybe an improvement). Anyway, thought this might be informative...
TB