Close up with the new and improved Moto 360 (pictures)

The 42mm compared to the 46mm model.

When charging, the Moto 360 will transform into a bedside clock.

Moto Body is Motorola's fitness tracking app.

The two Moto 360 models: 42mm with a 20mm strap and 46mm with a 22mm one.

Thickness is the same for both models.

The "women's collection" features a 42mm face with a slim 16mm strap.

Here it is compared to the larger 46mm model.