Under Armour's Armour39 built for intense exercise (pictures)

The $149.99 Under Armour Armour39 tracks serious workouts in terms of heart rate and exercise intensity.

Brian Bennett May 13, 2013 3:13 p.m. PT

1 of 5 Sarah Tew/CNET

Gird it before battle

Consisting of a thick, rubbery chest strap and tracker "bug" unit, the Under Armour Armour39 is no casual fitness gadget.

2 of 5 Sarah Tew/CNET

The Under Armour Armour39's strap is flat but as wide as ones you'll find on backpacks.

3 of 5 Sarah Tew/CNET

With yellow accents and gaudy paint job, the Under Armour Armour39 has a design aesthetic that's not for the timid.

4 of 5 Sarah Tew/CNET

The Under Armour Armour39's strap is large but surprisingly light and comfortable to wear.

5 of 5 Sarah Tew/CNET

The Armour39 bug tracker uses a watch battery that's replaceable, not rechargeable.

57 Photos

55 Photos

38 Photos

64 Photos

41 Photos

75 Photos

49 Photos