40 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Timex Main Street NASA Artemis 40mm Silicone Strap Watch is the Timex Main Street NASA Artemis Digital 36mm Resin Strap Watch ($89) — same family (Main Street NASA Artemis) and Visually similar. If price is the constraint, the Timex Expedition Scout 40mm Leather Strap Watch - TW4B34000 at $46 (vs $99 for the Main Street NASA Artemis 40mm Silicone Strap Watch) covers most of the same brief. From the independents, the Certina DS Jubile is the standout microbrand take — looks nearly identical and Quartz. Stepping up, the Bulova White Dial HNBR Rubber Snorkel 98B449 ($375) is where the same idea goes with a bigger budget.
Independent makers covering the same brief, usually with something the mainstream brands don't.
Established brands covering the same brief at a comparable price: same case size, similar movement family. Often the deciding click for a new buyer.
If the price is the only thing keeping you off this watch, these get you most of the way there for less.
Where the same idea goes when budget isn't the constraint: luxury upgrades and step-ups.