Fitbit Sense: An up-close look at the design

The Fitbit Sense is Fitbit's newest premium fitness watch: it adds GPS, ECG, improved heart-rate tracking, stress sensing via an EDA sensor and skin temperature.

We haven't tested it yet but did get a look at one out of the box to see its design up close.

The Sense has a sleek feel and adds metal edges that act as sensors to measure ECG (for possible atrial fibrillation) and EDA stress levels.

It looks like the Fitbit Versa watch from a distance, or even an Apple Watch.

The rear of the watch has the most changes: It's metal, with new connectors for the charger as well as extra optical channels for heart rate (where LED light can shine and be sensed).

We weren't able to connect the Sense yet, but we tried turning it on.

The Sense comes with a rubber strap in the box that feels comfy.

A look at the Fitbit Sense (right) next to the Fitbit Versa 2 (left) and Apple Watch Series 5 (middle).

The Fitbit Sense in its box: two sizes of rubber straps and its unique charger.

The new snap-on magnetic charger charges faster and feels more secure than before.

It's a new charger, so older Fitbit Versa models can't use it. But it feels a lot nicer.

The new watch strap mechanisms are also a lot cleaner. They detach and re-attach more like the Fitbit Charge bands.

A side view of the Fitbit Sense next to the Versa 2. Nearly identical thickness.

The side "button" is now a vibrating touch zone, more like the way the Fitbit Charge devices work.