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The smart and sporty Jawbone UP24 is the most fashionable, lightweight and comfortable fitness tracking wearable you can buy, and it has a beautiful app to match. Of course, some functionality is sacrificed in the name of vanity. For starters, there’s no display on the device itself for on-demand workout stats or a web-based portal to chart the quantified self data it silently collects. All metrics have to be synced to an iOS app, but the UP24 improves over the original UP with Bluetooth wireless syncing to make data uploads almost effortless. Battery life takes a hit, but it will still last an impressive seven days.
As its name suggests, this new version of the UP can truly be worn 24 hours a day without the need to take it off between syncs. The flexible bracelet is coated with the same incredibly smooth non-latex rubber and if you want to check your fitness stats, you need to fire up the companion iOS app, which is full of rich color and helpful wellness tips, plus detailed activity and sleep analysis tracking options.
Your activity is represented by a vertical orange bar that shoots up with more physical movement and is based on the number of steps taken and miles or kilometers traveled. Additional readouts include active time, longest active time, longest idle time, total calories burned, active calories burned and resting calories burned. It’s almost the full spectrum of fitness metrics. Flights of stairs climbed is the one missing stat. Unlike the Fitbit Force, there’s no altimeter sensor inside.
But the Jawbone UP24 is arguably a more accurate tracker than the Force and its idle alerts cause the bracelet to vibrate whenever you’re inactive for a set amount of time. Other exercise motivators include “Today I Will” challenges (get to sleep earlier, drink more water, walk further, etc.) and the ability to find teammates among your contacts. The UP24’s sleep tracking capabilities, meanwhile, chart whether you’re sound asleep, restless or awake in bed. It’s surprisingly accurate for a fitness bracelet, which can also replace your alarm clock with silent, wrist-vibrating wake-up calls.
The Jawbone UP24’s fashionable, lightweight design makes it easier to wear for a full 24 hours and the activity and sleep tracking metrics make it useful day and night. Our only gripe? The 2.5mm power jack makes it fiddly to charge — it comes with a 2.5mm-to-USB charger, but it’s too easy to lose.
The bottom line. With Bluetooth, the UP24 is $50 more expensive than the original, but until Apple releases an iWatch, it remains one of the slickest fitness wearables you can snap onto your wrist.
iPhone 4s and newer, iPod touch 5th gen and newer, iPad 3rd gen and newer, or iPad mini and newer
Wireless syncing added. Stylish and lightweight. Soft rubber for comfort. iOS compatible.
No display for on-demand stats. No web app. Fiddly 2.5mm stereo jack for charging.