My Omega Speedmaster Triple Date is the first nice watche in my small collection. It came with a stainless steel bracelet that is sized to fit my wrist. However, like most humans, my wrist dimensions change over the course of a day such that a bracelet is either too loose or too tight.
And, I have little tolerance for a loose bracelet because of a bit of bone on my wrist that is more prominent than in a lot of people. A loose watch with any mass will bounce into it multiple times a day, which results in some discomfort.
As a result, I prefer my watch to be relatively immobile on my wrist. That means that bracelets are not my best choice for affixing a wristwatch to my wrist.
A leather, rubber, or cloth strap will work much better because they are readily adjustable as my wrist circumference changes during the day. They also have a little inherent give to them that means they will change length slightly with my changing wrist geometry.
I have learned a bit about NATO and Zulu nylon straps. They provide another way of adding some color that can complement my wristwatch.
And so I have my Speedy on a seatbelt nylon NATO in blue. This straps complements the blue dial of my Speedy nicely and I like the combination. Plus, the strap is very comfortable against my skin.
I also think that a blue strap with some gray or silver might also be a nice color combination for the Speedy. I will spend some time this weekend shopping.