Just pulled the trigger on the blue Prometheus Jellyfish:
Seiko automatic movement, tritium tubes, 300m WR, steel case, sapphire crystal. Also available in black, white and yellow. As to why it's called the Jellyfish...jellyfish produce their own bio-luminesence. Same thing with this watch - the tritium tubes are not as bright as a charged luminova dial, but give it 60 mins and the tubes are still glowing. In fact, they're always glowing .... but have a 12 year half life though. Bought mine direct from the company
...good deal for $360.