The Apple Watch and everything it will do is not a new idea. Watches for years have been able to store data, give us directions, offer a means to communicate at a distance and, yes, show us our heartbeat.
It’s just that you couldn’t get all of those functions wearing just one watch. For each function, there was a separate wrist gadget.
So on the eve of the Apple Watch launch, consider the technologically advanced timepieces that paved the way to this momentous day. You might be even more impressed with the power of your new device.