The market for wearable activity trackers continues to grow, which means greater choice for those interested in using technology to help maintain a better quality of life, but it also makes it tough to decide which one is right for you. We got some wrist-on experience with Polar’s latest activity tracker – the Loop 2 – to see how well this device measures up.
Aside from the clasp, the only other physical interaction with the Loop 2 is via the charge/sync port underneath and the button on top. The included USB charge/sync cable magnetically attaches when aligned properly. Pressing the capacitive button triggers the LED display, and repeat presses cycle through the information shown. Users can review activity, calories burned, steps taken, and the current time. The LED display automatically shuts off after a couple of seconds.The Polar Loop 2 activity tracker is made of soft silicone with an appearance that’s one step-up from plain, owning a touch of style without looking ugly or garish. The hardware is embedded within the thicker portion of the band, secured in place by four hex screws. This design helps to make the tracker sweat- and waterproof. A silver pair of plastic slivers flank the unit’s LED screen, which glows through the silicone when active. The Loop 2 is designed to be custom fit, with trimmable ends and a secure metal clasp that prevents the bracelet from accidentally falling off.
The Polar Loop 2 doesn’t show battery levels except for when it's charging. When the LED screen is dim, then you know the battery is around 20 percent. Once it hits 10 percent, the LED screen will actually tell you the battery is low. The battery life can last up to a week, but we found that you need to keep notifications off and button presses to a freakish minimum to achieve this. The internal motor, which vibrates for notifications, and LED screen tend to drain the battery quickly. A full charge takes around four to five hours, and if you charge the device for an hour every few days it’ll stay topped up well.
The LED display on the Polar Loop 2 is, well, ok. It gets the job done so long as you’re not in direct sunlight. Even light shade has a tendency to wash out the brightness, forcing you to hover a cupped hand over your wrist. The button sometimes needs a second press to register. And if you happen to be washing dishes or making messy watermelon slices, you’ll notice the LED screen light up on its own when liquid connects the button to your skin.
While the Loop 2 can sync data through its USB cable, most users will opt for the convenience of Bluetooth wireless connectivity via the Polar Flow mobile app. The app makes pairing a simple process. So long as Bluetooth is enabled on the paired device, the Loop 2 will periodically sync data regardless of whether the Polar Flow app is active or open. This can, on occasion, interrupt Bluetooth speaker playback for the entire duration of syncing, especially each time the app requests a "hard" sync.
The Loop 2 wirelessly pairs and syncs with only one device at a time, so you can't have it connect with both a smartphone and tablet, even if the devices are using the same account.
Adjusting the band to custom-fit your wrist size is a little fiddly. Although the company will provide replacement bands, it’s better to proceed slowly and do it right the first time. If you want to get a straight, clean cut through the silicone as you're sizing, use a sharp, thin blade instead of scissors. With all the measuring, cutting, replacing of pins, refitting, and more cutting, one can easily spend 15 to 20 minutes carefully sizing the band. But for all the work done just this one time, the Loop 2 ends up as a custom-fit activity tracker that won't fall or rip off through activity. And it's quick and easy to remove.
The initial setup requires that the Polar Loop 2 be connected to a computer via the USB cable. After visiting the website to download the software, install it, and then create an account, the Loop 2 will need about 10 minutes to update and initialize. This is is a good opportunity to explore the Polar website and make any profile changes (especially if you're concerned about the default privacy of your activity). The site presents a clean layout of training/history to users. You can sort through graphs and cumulated statistics of steps taken, distance walked, calories burned, and so forth. Some personal information, along with the selection of a fitness level, is mandated in order to determine goals and more-accurate estimations of tracked activity and calories burned.
There is also a social element to using the Loop 2 and Polar.com. You can explore publically-logged entries worldwide through an interactive map. Names, dates, routes, and activity statistics are visible (if allowed by the user). You can follow other members – some only an approved request – in order to view their training activity in your mobile/browser feed. Although you can write comments, the interaction is rather thin.
Not only that, but the map feels like a haphazard data dump, as there are no tools to sort by date, person, or activity type. By zooming in some areas, you're likely to find multiple, sometimes dozens of entries by one or more very active individuals. If you're internally motivated toward exercise and activity, this "social" aspect may not matter much at all. But if you're externally-motivated, it's probably going to fall short of meeting your needs.
Between the band sizing, software installation, and Loop 2 initialization, the whole process can take a casual 40 minutes from start to finish, but at least it's a one-time affair.
Although the Polar website offers a more comprehensive presentation of information, the mobile app is far more convenient for staying on top of daily activity and stats.
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