Apple Watch: 5 things you should know before the launch

Apple CEO Tim Cook is expected to unveil the company's newest device and make the case for why it's a must-have gadget at a San Francisco event that kicks off at 10:30 PM IST tonight. Apple teased the smartwatch in September but has given few details. Scheduled to hit the market in April, industry watchers are eager to see if Apple's version will be the tipping point for the sluggish smartwatch market. There was similar skepticism when Apple released the iPad in 2010, yet the company has successfully sold millions and its popularity has shaken up the PC market.