First look: Hands-on with Apple Watch and working software

Following a formal presentation covering previously unanswered questions about capabilities, battery life and — perhaps most importantly — pricing, Apple gave attendees at Yerba Buena Center a chance to preview working Apple Watch examples.

On the outside, Apple Watch remains largely unchanged from demo models shown off in September. The units at today's event, however, were fully functional, giving those in attendance a taste of how Watch will operate in the real world.

On the underside is Apple's bespoke heart rate sensor, which will enable Watch to track realtime stats to offer users a more personalized health and fitness experience.

Also on display were various Apple Watch straps, including fluoroelastomer sport bands included with many entry-level Watch models.

Along with a 38mm model, Apple is offering a 42mm version for each of the three Apple Watch tiers; Apple Watch Sport, Apple Watch and Apple Watch Edition. The larger versions come at a premium of $50 for the Sport and Watch, while the 42mm Edition costs an extra $2,000.

Apple will start accepting preorders for Apple Watch on April 10, the same day devices are slated to hit Apple Store display tables for fittings. The device is scheduled to launch on April 24.