If you want a more true to like Explorer copy, with sapphire crystal and same miyota movement
https://www.aliexpress.com/item/4000808960022.html
Otherwise search explorer watch on ali and you can find many, many Rolex explorer copies with Sapphire crystal and better specs all around, mostly chinese or this miyota movement, too thin for the Seiko but maybe there's one out there. Solid casebacks and truish copies of the bracelet too, all for like 50-70 bucks. and if you can find a Miyota that is new enough, it will have hacking!
quite a chunk of the rainforest and an iron ore mine . But all in all the box's are cool , and the ' Reliance ' is a very nice watch with great specifications for little money ,I am very happy with my 4 so Ingersoll's so far , zero problems in time keeping and build .
These are a well made watch all being told .