When Apple released its first wearable five years ago, many publications, including ours, were pretty skeptical. And with good reason, the first-gen watch was far from perfect, and Apple's sale's pitch was a little confusing (was this a phone replacement? a fitness device? a communicator?) Future releases have refined Apple's vision, and created what may be the most popular watch, smart or otherwise, in the world. Get More Engadget: • Like us on Facebook: http://www.facebook.com/engadget • Follow us on Twitter: http://www.twitter.com/engadget • Follow us on Instagram: http://www.instagram.com/engadget • Read more: http://www.engadget.com