Straps length? For new Spitfire Chrono Ref.3878

Hello guys,

I just bought a bracelet version of new Spitfire Chrono.
I want to buy a croco straps for business use (bracelet for traveling)
So, I have a couple questions and need suggestion:

1) What is the length of each original straps? I guess 115x75 mm, right?

2) If yes, I think I got trouble because my wrist is small (6.3 inches).
The straps length I prefer is 60-65 x 115-120 mm. The reason I prefer this length is a shape of deployant buckle. I bought an OEM deployant buckle from eBay last two week and then try to attached to straps from another watch with 115x75 mm length.
The Problem is if I order an OEM straps I need to order 2 set, use 65 mm from shorter set and use 115 mm from normal set. Is it too expensive?
Ummm.... or should I buy from other custom strap makers? Who? Where(URL)?

3) Which color is best suit to new Spitfire Chrono?
a) original brown b) black c) dark blue (as use in Portuguese with white dial & blue steel)

Thank you :)

Just order an XS strap which is made for smaller wrist sizes. Color is a matter of taste.

I'd suggest working through an authorized dealer to get the right fit. For pin buckle models, the strap sizes are:

XS 105 x 65
Reg 115 x 75
XL 125 x 85

IWC's deployant straps are different sizes and shorter on one side, but that will help you avoid ordering two.

In terms of color I like the original brown best, followed by black but not blue. But that's more subjective than measuring fit ;)

Thank you so much.
I just asked an AD I bought the watch, the length of straps that come with a watch is 145 mm and 55 mm.
I think I'll order this regular size.