Have a look at the "stiletto" range from Citizen, very compact and sleek
I'll be treating myself to the one I've linked some time in may...5mm thick, 36mm wide, very slick!
They do some cheaper models with the same sort of spec for around half the price if budget is a problem
Skagen also do a lot of very slim, small watches.
Can't actually see the exact watch you linked to, I just keep getting directed to the home page...so I'm still operating under the assumption that you want a plain, nice looking leather strap sort of deal.
These all come in at around £80 (which is around $150 or not too much more I believe)
Just throwing a few ideas out there for you, I think 35mm width is about as small as most mens watches go to be honest (I could be totally wrong of course). :)
Edit: Probably a bit out of your price range, but if 35mm really is too big, the Wenger womens models actually mirror their mens designs very well, but come in at around 30mm wide...I own a mans "Wenger Alpine", but the womans version is exactly the same, just smaller. Once again, just chucking a few ideas out there.
Ah, very sleek...definitely look at the "Skagen" brand if you are looking for something like that...they are very thin and they aren't high end, so they won't cost you the earth
5mm depth, 39mm wide...although they might be a bit wide, remember that you can explore the womens/unisex options and probably find much the same but a bit smaller.
I think you are going to have to go down the womens watch route to get something around 30mm be honest, but the type of watch you are looking for is to your advantage, there must be loads of plain leather strapped womens watches out there...and they don't have big signs announcing they are for women on them, so if it looks good on your wrist, then it simply looks good.