Who should adjust the bracelet?

[Sperry]

I'm not positive which size I have, but I want to get a blade one size up.

Here's how "Tools" describes it:

It's pretty clear that the 1.2 is too small, but the 1.4 might do in a pinch, however, the 1.6 is perfect and has a more sturdy handle.
For this a sturdy, properly fitting tool, is a safeguard against slipping or damage:

Check out Let's Take Out A Link

Great information.

I drive near Lancaster Horological Supply, and plan on stopping in for a set of Bergeon screwdriver set.