Apple Watch: Battery life, iPhone dependence, other troubling issues

The Apple Watch, which is to go on sale early next year with more than 20 different looks and a minimum price of $349, has its share of innovations: A screen made out of sapphire glass on some versions to increase its scratch-resistance. A "digital touch" feature that allows people to give their contacts physical taps on the wrist via the Internet. And an invention Apple compared to the iPod's click wheel - a watch crown that can be pressed or rotated to scroll, access Siri and return to the main screen.

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