We purchased the Amazon Halo ( so our reviewer could put it to the test. Keep reading for our full product review. )
The Amazon Halo band could be the minimalist device for you if you’re looking for a fitness tracking wearable that doesn’t keep you glued to a screen or constantly checking in for notifications and updates. This screen-free band is slim and unobtrusive on the outside, but it quietly evaluates your tone of voice, moments of activity, and sedentary stints on the inside, as well as providing sophisticated sleep data to help you get a better night’s sleep. Unlike the biggest names in the wearable fitness game, such as Fitbit and Apple, the Amazon Halo band also includes 3D body fat imaging for additional wellness tracking information.
The lack of any sort of interface on the Amazon Halo threw me off as a dedicated fitness tracker user, but my entire seven-day experience did help me become more aware of my sleep quality and general activity levels.
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Design: An accessory that blends in
The Halo band isn’t overpowering in any way. I tried out a small silver band and liked the streamlined bracelet-style form factor. The fabric strap, which is made up of sweat-wicking synthetics, has an athleisure look and feel to it: it’s sporty but not overly so. One single button on the side of the sensor unit, flanked by an LED indicator and one of two internal microphones, completes the minimalist look. The other mic, along with the optical sensor, is on the back; if you get it close enough, it’s almost undetectable.
The charging clip, on the other hand, is a little less sophisticated. It’s a rectangular bar with a hinge that opens to allow the device to be placed inside. Because it’s so light—almost flimsy—the clip part of the wearable slipped and snapped shut before I could place it in the charging cradle. The less-than-sophisticated charging accessory appears to be at odds with the more refined tracker design.
Comfort: Streamlined but not immune to typical fit issues
While the easy-to-adjust Velcro strap is a welcome change from most fitness trackers’ notch-and-clasp closure, adjusting the fit or removing the device wasn’t as simple as I’d hoped. The strap’s end is finished with hardware that keeps it from coming completely undone from the loop. A series of five strong Velcro strips/notches serve as sizing adjusters on the band as well. This design helps prevent accidental drops when putting on and taking off the band, which is always a good thing. The Velcro strips, on the other hand, are so strong that they slowed down quick adjustments and made removing the band more difficult overall.
Even with Velcro’s sizing flexibility, the Halo isn’t immune to the fit issues that any silicone band can cause. Despite the fact that the fabric is soft and comfortable against the skin, I had trouble finding the right fit for my small wrist. If I started the day with a tighter adjustment (which was very easy with this band), I had to loosen it by the end of the day to account for temperature and swelling changes.
While the easy-to-adjust Velcro strap is a welcome change from most fitness trackers’ notch-and-clasp closure, adjusting the fit or removing the device wasn’t as simple as I’d hoped.
In terms of water resistance, I didn’t test the Halo’s 50-meter swimproof rating in a pool, but I did shower with it for three days. Despite its moisture-wicking band material, the band remained damp for far longer than was comfortable, especially when compared to a fast-drying silicone band. If you’re a frequent swimmer or prefer not to remove your wearable while showering, the sport band is probably the better choice.
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Performance: Constantly monitoring movement, not performance
The Halo has the upper hand when it comes to continuously monitoring movement—and sedentary stints throughout the day—despite the fact that it doesn’t log detailed workout metrics. Whether you’re sitting at a desk or running errands, the Halo will record everything and categorize it fairly accurately. Walking and running activities were consistently registered, though the readout for the latter was not very accurate. To be honest, I don’t think that’s the point of the Halo series.
Rather, the Halo organizes all activity data into a simple point-tracking system. The weekly goal is 150 minutes of cardiovascular activity, which is the American Heart Association’s recommendation. Periods of movement and exercise contribute to this point total, while periods of inactivity deduct from the total. It’s an easy-to-understand system that adds a new dimension to the steps or movement alert features found in fitness trackers and smartwatches from Samsung, Garmin, Fitbit, and others. This system was a refreshing change from those reminders that can be annoying rather than motivating.
The Halo also includes round-the-clock heart rate monitoring, as well as extensive sleep tracking analysis and explanations. The sleep metrics outperform high-level data from Fitbit Sense and Samsung Fit2 devices, and they helped me feel more in tune with how I was sleeping each night based on my sleep score, logged disturbances, and how long it took me to fall asleep.
The Halo’s voice tone and body fat analysis are the most talked-about wearable technologies. While I don’t have a lot of meetings throughout the day that would have helped with this data, it was fascinating to read about the Halo band’s observations about tone changes during personal and professional conversations. These “significant moments” are represented by an emoji with one of four tones ranging from displeased to amused. Although you can’t go any further to see which moment the Halo captured, this tool appears to promote more self-awareness of how you might sound to others than anything else.
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All voice data and images used for the body scan are deleted from the app, but you can choose to back up body data in the cloud, which Amazon claims is secure and private.
The body fat scan is based on photos uploaded to the app—as well as app prompts. While it felt intrusive and isn’t something I’d look for in a fitness tracker, it functioned flawlessly. According to Amazon, this technology is twice as precise as smart scales. This feature also offers visualizations of how different body fat percentages would look on your frame and stores your scans for a look at trends over time for the right user who feels comfortable with this kind of data compilation. All voice data and images used for the body scan are deleted from the app, but you can choose to back up body data in the cloud, which Amazon claims is secure and private.
Software: An essential and user-friendly mobile app
The accompanying Halo mobile app is absolutely essential to the user experience because there is no visual display to interact with. It provides the helpful explanations and guidance that the majority of users desire. The Halo app, which is compatible with both iOS and Android phones, makes everything from initial setup to body scanning and voice tracking simple. The activity point tracking system, like the sleep data, is backed up by explanations. Automatically tracked workout data, as well as the option to manually upload workout activities, are both easily accessible (there are 38 to choose from, including an all-encompassing Other category).
Without a visual display to interact with, the accompanying Halo mobile app is absolutely essential to the user experience.
The Halo, like the Fitbit, comes with a free 6-month trial to a Halo membership, which includes a variety of guided wellness programs accessible through the app’s Discover tab. I did a variety of circuit, HIIT, and equipment-free workouts, all of which included a video to follow along with as well as audio instructions. Without these programs, the Halo band would lose a lot of its appeal. They’re great if you want to get in a quick workout or if you’re a regular at-home exerciser who likes to mix things up.
Everything about the app is simple, from the initial setup to body scanning and voice tracking.
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Battery: Enough juice to last nearly a week
The band should last up to seven days on a single charge, according to Amazon, when tone tracking is enabled. There are two ways to track tone: one that is more accurate and the other that saves battery life. I went with the latter option and discovered that the band lasted six days, which matches the manufacturer’s claims. I also noticed that by manually muting the microphone, the battery drained much more slowly than when I left it on all the time to listen.
While this isn’t the longest-lasting battery, it only took about 1 hour and 15 minutes to charge. Thanks to system notifications that popped up on my smartphone when my band battery was low as well as when it was fully charged and ready to go again, it was also easy to keep track of battery life and avoid inadvertently overcharging the device.
Price: A reasonable price for the feature set
The Amazon Halo band, which costs around $100 (, isn’t going to break the bank for budget-conscious shoppers. While the lack of a display may be a turnoff, the Halo’s solid mobile app allows for easy access to the Halo’s detailed sleep, automatic activity tracking, and specialized voice tone and body fat analysis. )
Amazon Halo vs. WHOOP Strap 3
The WHOOP Strap 3 is another screen-free fitness tracker with a minimalist design but a higher level of buy-in and performance focus. The WHOOP Strap, unlike the Halo, requires a WHOOP membership, which costs $30 monthly for a 6-month membership or $180 total (band included). The Halo band includes a free six-month subscription to Halo app services, followed by a $3.99 monthly charge, making it significantly less expensive—especially considering WHOOP recommends replacing their fabric strap every six months as well.
The WHOOP Strap, in comparison to the Halo, has a lot more strap color and accessory options, including custom engraving. The WHOOP platform has a social aspect that the Halo lacks, and the battery life is slightly behind at about five days. However, you can access data on a desktop and the WHOOP platform has a social aspect that the Halo lacks. While both options forego a busy screen in favor of streamlined wrist-based trackers and feature-rich companion apps, the best choice for you will most likely be whether the WHOOP’s athletic performance tracking appeals to you more than the Halo’s wellness-focused features.
The Final Word
With its lack of display and additional layers of data tracking to capture voice tone and body fat percentage, the Amazon Halo isn’t for everyone. This unique wearable, on the other hand, offers a different approach to increasing activity and wellness awareness on a daily basis for the user who wants a little less hardware but more forward-thinking fitness/health tracking.