On the eve of the Apple Watch going on sale, or at least pre-orders arriving at the doors of those lucky enough to get in before the lead times stretched out, Apple has made available its last three Guided Tours video demos which show users how the Apple Watch works across a range of different uses.

When Apple released its new video showcasing its commitment to protection of the environment, it showed all kinds of things ranging from data centers to the production methods used when creating things like iPhones and Apple Watches. One thing that was noticed during the lengthy video was an as-yet unannounced charging dock for Apple's new smartwatch.

If it seems like you can't open a webpage these days without it being full of Apple Watch news then, well, you're probably just going to have to come to terms with that for the next few days at least. Apple's first wearable goes on sale this coming Friday, and it's causing quite the stir. With three models to choose from it's not always easy to make that particular buying decision, and if you are concerned about the durability of your smartwatch then things are particularly complicated because the cheaper Apple Watch Sport comes with a different screen to the Apple Watch and Apple Watch Edition.