With only 17 days to go, Apple is going all out to promote the features on its first ever wearable, Digital Spy reports.

The company has started releasing new guided tour videos for the Apple Watch, showing casing its different features in action.

So far, you can see how Messages, Faces and Digital Touch work on the device, but more will be released as the days go on.

Example videos of Phone Calls, Siri, Maps, Music, Apple Pay, Activity and Workout features are next on the list.

"To take advantage of its size and location on your wrist, we've given Apple Watch new interactions and technologies," the page reads. "These Guided Tour videos will show you how to use them to do all kinds of amazing things."

Demand is expected to be so high that Apple has reportedly told its retail staff that customers will only be able to buy a device at launch by booking an appointment online.

The Apple Watch will be available to pre-order and try on by appointment from April 10, with orders shipping on April 24.