Casio F105 vs W86 - Which is the true F-91W successor?

Comparing the Casio F105W against the Casio W86. These two Casio watches are often referred to as being the successor to the classic F-91W. According to the source, some say that the F-105W is the successor but others say that it is the W-86-1VQES, but they can't both be right. By taking a deeper look and comparing the watches, we find out which is the better watch and which one is the true F-91W true successor.
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