Version 1.3.0 of the Pebble Smartwatch app supports Apple's iOS 7 notification system for the iPhone 4s and higher, allowing all Notification Center alerts to be displayed on the watch face. Previously, notification alerts were limited to calls and text messages, but now the Pebble Smart Watch is able to display notifications from apps like Twitter, Facebook, Google+, Calendar, Instagram, and more.
The Pebble Smart Watch can be purchased from the Pebble website for $150. Pebble Smartwatch can be downloaded from the App Store for free. [Direct Link]