What Makes a Wristwatch Tick?

Over 100 precision components help this wristwatch keep time. MACHINES: HOW THEY WORK Thursdays 10/9c on Science http://www.sciencechannel.com/tv-shows/machines-how-they-work/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq