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The Apple Watch Series 4 arrives in stores on Friday, Sept. 21. If you buy one, expect a surprise in the form of some seriously elaborate packaging (for the more expensive stainless steel version, at least). Gone is the cube-like box of the Series 3: This is an elongated box that opens like origami to reveal...

Published:Caption:Photo:Sarah Tew/CNET

Two boxes! The band is in the thinner of the two, while the larger internal box holds the body of the watch itself.

Published:Caption:Photo:Sarah Tew/CNET

Inside that larger box, you get the watch (center, in a protective pouch), the inductive charging cradle (left) and the USB AC adapter.

Published:Caption:Photo:Sarah Tew/CNET

Here's the 44mm Apple Watch Series 4, straight out of the box.

Published:Caption:Photo:Sarah Tew/CNET

Ready to rock.

Published:Caption:Photo:Sarah Tew/CNET

Unsheathing our new baby.

Published:Caption:Photo:Sarah Tew/CNET

This is the all-new heart rate sensor on the back.

Published:Caption:Photo:Sarah Tew/CNET

An EKG sensor is also onboard for medical-quality heart measurements to measure possible heart arrhythmia, but it's not yet unlocked. It's coming later this fall.

Published:Caption:Photo:Sarah Tew/CNET

Getting ready to set it up.

Published:Caption:Photo:Sarah Tew/CNET

Bands still come in familiar long boxes. This is the crazy gold Milanese steel mesh band.

Published:Caption:Photo:Sarah Tew/CNET

Clockwise from bottom left: the 44mm watch, the band and the charger (same as always, so your old chargers will work).

Published:Caption:Photo:Sarah Tew/CNET

The new Apple Watch S4 works with older Apple Watch bands. Here are some new colors.

Published:Caption:Photo:Sarah Tew/CNET

Band-swapping should be the same as always.

Published:Caption:Photo:Sarah Tew/CNET

Sliding the gold band on the gold watch.

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This is... a lot of gold.

Published:Caption:Photo:Sarah Tew/CNET

A look at the Watch Series 4 in profile. Note the more subtle cellular red ring on the crown button.

Published:Caption:Photo:Sarah Tew/CNET

I wouldn't wear this gold of a gold watch.

Published:Caption:Photo:Sarah Tew/CNET

The new watch is a bit thinner, but not super thin.

Published:Caption:Photo:Sarah Tew/CNET

Stay tuned for our full review.

Published:Caption:Photo:Sarah Tew/CNET
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