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Under Armour's Armour 39 fitness tracking system (pictures)

Under Armour is going after Nike's FuelBand and other fitness-monitoring systems with its own setup.

Roger Cheng
Roger Cheng (he/him/his) was the executive editor in charge of CNET News, managing everything from daily breaking news to in-depth investigative packages. Prior to this, he was on the telecommunications beat and wrote for Dow Jones Newswires and The Wall Street Journal for nearly a decade and got his start writing and laying out pages at a local paper in Southern California. He's a devoted Trojan alum and thinks sleep is the perfect -- if unattainable -- hobby for a parent.
Roger Cheng
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Under Armour's Armour 39 tracking system

Under Armour unveiled its Armour 39 system today, which includes a strap that monitors, among other things, your heart rate. The strap also has a slot for a "bug," which acts like a computer, sending data to the cloud via a Bluetooth connection.
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2 of 11 Roger Cheng/CNET

Under Armour CEO kicks off the event

Under Armour CEO Kevin Plank kicked off the event with a review of the company's background and the steps it is taking for the future.
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3 of 11 Roger Cheng/CNET

The Armour 39 system gear

The system includes the strap, the bug, and an optional watch. The strap and bug combined cost $150, while the watch costs $200. The iOS app is free.
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Armour 39 as seen on the iPad

A look at the stats that Armour 39 tracks on the iPad. In addition to heart rate, intensity, and calories burned, it offers up its own stat, "WILLpower," which tracks how well you exercised.
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Using Armour 39 on stage

An Under Armour employee discussing how the system works.
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Getting pumped up

The Under Armour employee pushing the Armour 39 tester to move faster and harder to push up her WILLpower score.
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Armour 39 is fittingly worn under your clothes

The strap works fine for men and women, and the company is working on a system that's built into the shirt itself.
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8 of 11 Roger Cheng/CNET

Under Armour's 'I Will' campaign

Under Armour also unveiled a new campaign, titled "I Will," to tie into the WILLpower metric found in Armour 39.
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Armour 39's smartwatch

Under Armour will also offer a watch accessory that displays your stats. While useful, it is expensive at $200. Still, it beats looking at your phone every few minutes. It too connects via Bluetooth.
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The Armour 39 strap

The Armour 39 strap is worn around the chest, or just below. The strap has sensors that monitor the heart rate and other metrics. In the center of the strap sits the bug computer.
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Armour 39 on the iPhone

The Armour 39 iPhone app in action. For now, the system works only with iOS, but an Android version is expected soon.

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