The smart watches currently on the market can only give you a limited amount of information. The Martian Watch, for example, only shows 40 characters of an email or text, and the I’m Watch shows just a little more. Worse, you can’t respond to messages on either. The iWatch needs to not only display messages of all kinds concisely, but let you respond to them via Siri. (The watch will communicate with your iPhone via Bluetooth.) You’ll also be able to set your alarm, look up sports scores, get directions and more right from your wrist.