Welcome to STEMerch!
The Incredibly Unrigorous Engineering Watch
The silver band, black band, and leather band variants are adjustable
The 'stretch band' variant has a slightly larger face and has a stretch band which simply stretches to fit your wrist.
Estimated shipping time (for non 'pre-sale' watches): 4-5 weeks
Use discount code "TIME" to get a discount at checkout when you purchase a clock & watch.
Instructions on how to adjust the silver band watch here: https://youtu.be/_sKnDS8Uz90?t=48