On Monday, Apple (AAPL 1.27%) will likely finally provide all the missing details about its Apple Watch, including pricing, availability, and a launch date. Beyond the Apple Watch, some speculation even points to a new Retina Macbook Air. Here's are the key items to watch during the event.

Apple's initial unveil video for Apple Watch. Source: Apple YouTube channel.

Battery life
One of the most interesting details during Apple's event tomorrow will be battery life for the Apple Watch. For now, all we know about the device's battery life is the vague reference from Apple CEO Tim Cook made during an interview with Telegraph in London in February about the battery lasting all day.

Source: Apple.

But what will the real-world use look like? If battery life only lasts all day with moderate use, it may be hard for consumers to justify wearing a device that could end up with a depleted battery before the day is over.

As far as charging, the company has already revealed that the device will be charged with magnetic inductive charging technology -- a small step toward greater convenience than the lighting cable for iPhone, but still not wireless.

"Our goal was to make Apple Watch easy to charge in the dark. Without looking," Apple's website reads. The company says its inductive charging is "a completely sealed system free of exposed contacts. And it's very forgiving, requiring no precise alignment. You simply hold the connector near the back of the watch, where magnets cause it to snap into place automatically." 

Pricing
The only thing that is certain about the Apple Watch pricing ahead of the big event is that pricing for the watch starts at $349. While this pricing is likely for the aluminum Sport model, there's not yet any clarity on what prices may be for its stainless steel or 18-karat gold versions of the watch. Further, it will be interesting to see how Apple prices its bands when purchased separately from the watch.

It will be particularly intriguing to see how high Apple Watch pricing will range. If Apple's higher-end stainless steel and 18-karat gold models are priced comparably to current luxury watch pricing, technology journalist John Gruber believes that Apple Watch pricing could range as high as $20,000.

Availability
During Apple's most recent earnings call, Cook said Apple would be shipping the Apple Watch in April. On Monday, Apple should reveal a specific date for the launch, as well as the initial launch countries. Further, Apple will likely announce whether or not it will be taking pre-orders for the device, as it does for most iPhone launches.

It will also be interesting to see if Apple finally authorizes Apple-approved third-party accessories for Apple Watch.

A Retina Macbook Air?
Speculation has surfaced about a Retina Macbook Air unveiling during Monday's event. While rumors of a Retina Macbook Air launch have continued to make headlines, there haven't been any substantial hardware leaks. And given Apple's sprawling global supply chain, it's likely that leaks on the parts contained in a Retina Macbook Air would have surfaced by now if the company really did plan on showing off a Retina version of the popular laptop tomorrow.

While it's possible that Apple may update its portable Macs with new processors, don't count on the Retina display finally making its way to the Macbook Air Monday.

Apple's big event is called "Spring forward", cleverly timed after Daylight Saving Time and perhaps indicating the focus on the Apple Watch. Source: Apple.

How to watch
Apple's "Spring forward" event, which will take place at the Yerba Buena Center for the Arts in San Francisco, is at 1:00 PM EST Monday. The event will be streamed live here. Live streaming on a Mac or iOS device will require Safari 5.1.10 or later on OS X v10.6.8 or later and Safari on iOS 6.0 or later, respectively. Watching the event on Apple TV will require a second- or third-generation Apple TV with software 6.2 or later. A recording of Apple events are usually posted to the company's website shortly after the event.

Return to The Motley Fool for post-event analysis of announcements made on Monday.