Skip to main content

The Armour 39 adds a new measurement to your workout: Heart

Armour 39 fitness strap announcementCheck out our review of the Under Armour E39 fitness band. 

Under Armour unveiled its entrant into the burgeoning fitness technology space on Tuesday. “Dubbed Armour 39,” it is both an ode to the company’s humble roots – 39 references the made up “style number” they attributed to the first shirt they ever made – as well as a pretty bold step into the platform manufacturing business. “Armour 39 is a big statement for us,” Plank said at the product’s unveiling in downtown Manhattan.

Our recent attraction towards workout monitors is the natural convergence of this whole Internet-of-things trend and the nation’s recently acquired taste for stat freaks like Billy Beane and Nate Silver. We want to be able measure things and we want those results conveniently in the cloud. The truth is in the numbers and yes, there’s an app for that.

While Jawbone and Fitbit both have interesting devices in this category, Armour 39 is going to be most directly compared to Nike’s FuelBand, which increasingly dominates the wrist space of joggers and gym rats. But while it would be unfair to call Nike’s product a gimmick, as a training device it falls somewhere between glorified motion detector and overpriced fashion accessory. Armour 39 is an entirely different beast. The former is best suited to soccer moms at pilates parties; the latter looks more like the exercise tool of Tony Stark.

The distinction is easily discerned from a quick visual inspection. While the FuelBand is a sleek bracelet, Armour 39 straps around your chest. The FuelBand basically measures how much it moves; Armour 39 uses consumer-level biometric technology developed by a company called Zephyr Technologies, which has already deployed a medical grade version of the tech with NASA, the Navy SEALs, and professional athletes. It can measure heart rate, speed, steps, and the overall intensity of a workout.

And while the hardware is impressive, “The genius is in the algorithms,” says Under Armour COO Kip Fulks.

Armour 39 fitness strap
Image used with permission by copyright holder

That software generates another comparison to FuelBand, which eggs users on by assigning them vaguely-defined “fuel points” based on how much the wrist band senses it has moved over the course of a day. Under Armour has its own black box metric with fancy branding: WILLpower. The difference is in the end goal of each unit of measurement; it’s basically quantity over quality. Fuel points measure how much work you’ve done over all while WILLpower assigns a value on a scale of one to 10 of how hard you’ve worked.

How accurate this is remains to be seen. While Under Armour won’t divulge the parameters of their algorithms, they were quick to point out that WILLpower is based on the user’s individual athletic profile. So you’re being judged on whether or not you’re working out to your personal potential.

In other words, Under Armour is claiming to measure something never previously quantifiable with technology: heart. Are you working hard enough? Or are you simply going through the motions?

“You need a number,” Plank said. “For today, for tomorrow. It’s the first performance training tool that tells you everyday: How did you do? You can look at your heart rate, your calories burnt – but did you work? Did you get it done done?”

The company had a few of their professional endorsers on hand for the announcement, each of whom knows from serious workouts. “Sometimes you need that self realization,” says Houston Texans’ running back Arian Foster, “that reality check.”

Until now, proper training mentality was something coaches had to ensure with their presence and watchful eye. But in an age where whole cities are under surveillance and drones fight our battles, why shouldn’t robots pick up the slack for those of us who don’t have anyone to shout in our ear when we’re dogging it?

Armour 39 fitness strap Arian Foster Gina Carano
Image used with permission by copyright holder

“I really like the idea that someone can check in you,” said former MMA champion Gina Carano, who had been testing out the devices during her recent workouts. Now, there’s nowhere to hide.

Armour 39 is intended to be a full platform, with the hardware running increasingly sophisticated programs going forward. That might explain why they unveiled not just the chest strap, but also a wrist accessory that provides real-time monitoring. Considering that the watch costs more than the strap, and considering the strap uploads directly to the cloud and you can get real-time monitoring on an iOS or Android app on your phone, buying the accessory doesn’t make much sense.

Then again, Armour 39 isn’t really targeted at people who work out while checking their text messages.This is a serious device for serious fitness buffs who fully buy in to the “quantifiable self” philosophy that promises better living through analytics. You aren’t going to reach your daily fitness goals by waving this thing a few times around your head.

The Armour 39 module and strap will be available March 20 for $149.99. The watch is $199.99.

Editors' Recommendations

Alec Liu
Former Digital Trends Contributor
Roborock S8 MaxV Ultra vs. Ecovacs Deebot X2 Combo: Which premium robot vacuum is best?
The Roborock S8 MaxV Ultra placed in its dock.

Roborock and Ecovacs are two of the biggest names in the world of robot vacuums. The companies have been producing some of the best robot vacuum and mop combos for years, and that trend has continued into 2024 with the Roborock S8 MaxV Ultra and Ecovacs Deebot X2 Combo. Both are ultra-premium devices that clock in at over $1,000, and we awarded both of them impressive scores in our reviews. In short, it's hard to go wrong with either robot vacuum.

However, there are some key differences between the Roborock S8 MaxV Ultra and the Ecovacs Deebot X2 Combo. From suction power and mopping skills to pricing and additional features, here's a comprehensive look at the two robot vacuums to help you decide which is best for your home.
Pricing and availability

Read more
Samsung Spring Sale: Get up to $915 off smart ranges today
A Samsung smart range with the Smart Oven camera.

Samsung's Spring Black Friday sale has slashed the prices of all kinds of home appliances, including gas and electric ranges. There are discounts available for Samsung's smart ranges too, which will allow you to enjoy savings of up to $915. Feel free to check out all the ranges that are cheaper than usual in the ongoing sale, but if you want to focus on getting a smart range for your kitchen, read on to learn all about them and how much you'll have to pay.

What to buy in Samsung's Spring Black Friday sale for smart ranges
Samsung's smart ranges are equipped with the Smart Oven Camera, which will allow you to check on the food that you're cooking through a livestream on your phone. You can even make time-lapse videos and share them on social media. You'll enjoy this feature on the Samsung Bespoke 6.3. cu. ft. smart slide-in electric range, which is from $2,536 for a $737 discount, and the Samsung Bespoke 6.0. cu. ft. smart slide-in gas range, which is from $2,659 for savings of $760. Both smart ranges have illuminated precision knobs that light up to let you know that the home appliance is on, and they work with the Samsung SmartThings app for pre-heating the oven, planning meals, downloading cooking modes, and much more.

Read more
How to reset the Nanoleaf Skylight
The Nanoleaf Skylight lighting up a room various shades of purple.

The Nanoleaf Skylight is a unique piece of hardware. Unlike most Nanoleaf products that are quick to install or easy to move and replace, the Skylight is designed as a permanent fixture in your home. Instead of simply plugging it into an electrical outlet, you'll need to hardwire it onto your ceiling – and once it's in place, you'll want it to stay there for years.

However, like all electronics, it's possible for your Nanoleaf Skylight to start acting up. And since there's no easy way to get the entire unit down from your ceiling, you might be wondering how you can quickly solve the problem. Thankfully, Nanoleaf designed a simple way for you to reset the Nanoleaf Skylight without the need to disassemble the entire setup.

Read more