37 watches that match on case size, movement family, and price band. Sorted by how close the match is.
The closest alternative to the Timex IRONMAN Essential 30 Silicone Strap Watch is the Casio GMD-B300 ($135) — common cross-shop and Looks nearly identical. If price is the constraint, the Casio AE-1000W at $40 (vs $93 for the IRONMAN Essential 30 Silicone Strap Watch) covers most of the same brief. From the independents, the Kleynod Men's watch KLEYNOD Ukrainian Force, КT-801.SL is the standout microbrand take — looks nearly identical and Quartz. Stepping up, the Casio GW-5000HS ($330) 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.