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When someone asks me what time it is, I can usually answer before people even start reaching for their phones. It takes a lot less effort to rotate your wrist and move your eyes than take a phone out, press a button, get distracted by notifications and lock your phone again. Also, watch batteries last much longer than phone batteries. Some people l
A mechanical watch is so named because it contains inside the outer case, a mechanical movement. Such movements were used in clocks for centuries before being adapted for watches.
An automatic watch winds a spring, while a kinetic watch charges a capacitor or battery.
Yes watch is a very good example of a commodity which fits in all three categories.