I'm looking for a budget smartwatch - let's say sub 40$ - to take to the beach or the pool.
I know salt water (or chlorine water in the pool) will wear down the seals faster than fresh water, but I can replace them from time to time by myself (if I find the correct rubber band).
Should be waterproof (for the occasional swim), have a sim card to make calls (i.e. not through a paired smartphone), and preferably have a camera (could even be 0.3M but higher is better).
Nice to have - 3G / 4G, GPS, completely waterproof.
Couldn't find one like this in this price - cheap waterproof watches usually don't have sim capability.
Notable exception is SOCOOLE W08 at 45$, but I really want a camera and frankly the sim cover is not very reassuring with respect to waterproofness...