My SD. This is the watch I would be wearing if i got lost on a desert island.I wear it for camping out in the bush, fishing , snorkelling and holidays by the sea. Rugged, bulletproof, dependable IMHO. I like the reassuring glow of the Luminova compared to no glow from the tritium plots on my vintage 5513. My TT DSA is a contender but it is only waterproof to 100 M , hmmm.
