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It's perfect for a beginners. The Nike+ app includes GPS tracking, challenges to keep one motivated, guides with audio, and coaching plans. It also makes it easy to use it with friends.

No, but all quality watches have a degree of resistance. Water Resistance is a common mark stamped on the back of watches to indicate how well a watch is sealed against ingress of water. It is usually accompanied by an indication of the static test pressure that the watch was exposed to in a leakage test. For example 5 ATM (Atmospheres). The test p

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

An automatic watch winds a spring, while a kinetic watch charges a capacitor or battery.

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.

Yes watch is a very good example of a commodity which fits in all three categories.