Not sure whether these are the dimensions of the 103N adjustable as that sounds a little short to me (and more likely to be the non-adjustable 102 model). All I know is that fully out the strap comes well to my waist...which certainly don't sound like 900mm to me. OK I aint tall but I'm not miniature either - standing at about 5'10".If my math is correct, 900mm = 35 inches and change. Not long enough for me. They do look nice, though.
I've been digging my optec sling strap.
I was almost on the brink of pulling the trigger for one from there until I noticed they have changed the design of the red ones, and made all the trim red as well, instead of black. I decided that my X100 and Pentax deserved the ones I found to be snazzier, and decided to pay the premium for a local source, which I was anticipating would probably have the older stock. And they did