Aura at CES 2019 introduced an Apple Watch "Smart Strap" designed to measure weight, water, fat, and muscle via electrodes built into the band. The strap didn't end up launching in 2019, but Aura says that it's set to launch in March 2020, with pre-orders available now.

The Aura Strap, which is priced at $99, claims to allow users to measure their body composition and track their hydration levels and fitness progress. Aura says the band uses bioimpedance to analyze the upper body, tracking lung performance and changes in breathing, comparing that information with pulse data.

aurastrap1
The band is able to assess the risk of heart failure and notify the user, though this is something that newer Apple Watch models can do on their own without the need for an additional strap. Measuring body composition and hydration is not something the Apple Watch can do on its own, though testing will need to be done to see how accurate the Aura strap is in practice.

aurastrap2
The Aura Strap is available in four color options, including black, green, red, and gray, and it attaches to the Apple Watch using the standard Apple Watch lugs. According to Aura, the strap transfers results to the watch "via an ultrasound interface" and it works for up to six months on a single battery. It has the same waterproof specifications as the watch and is able to sync with HealthKit.

Aura is taking pre-orders for the watch as of today, with the device set to begin shipping out to customers starting in March 2020.

Top Rated Comments

cdcastillo Avatar
68 months ago
I want to see the scientific papers on peer-reviewed journals comparing this with clinical measures. Otherwise, is just wishful thinking and snake oil sales. The papers usually come out 1-2 years after a product comes to market (e.g., there have been 2 in the last few months about the apple watch and A-Fib (one about the HEART study in the NEJM, and other using the apple watch to take a 6 lead precordial EKG in other journal, can't remember the name right now).
Score: 5 Votes (Like | Disagree)
MareLuce Avatar
68 months ago
All that but no pulse ox measurement?
Score: 2 Votes (Like | Disagree)
44267547 Avatar
68 months ago
Interesting technology, albeit I question the accuracy. I suspect Apple probably Will release their own version of a watch band like this in the future similarly.

But I think it’s very clear other manufacturers are seeing Apples leading with health related features, thus following by releasing products like this.
Score: 1 Votes (Like | Disagree)
gugy Avatar
68 months ago
Looks interesting. I’ll wait until reviews comes out.
Score: 1 Votes (Like | Disagree)
Dmitrii Avatar
68 months ago

I want to see the scientific papers on peer-reviewed journals comparing this with clinical measures. Otherwise, is just wishful thinking and snake oil sales. The papers usually come out 1-2 years after a product comes to market (e.g., there have been 2 in the last few months about the apple watch and A-Fib (one about the HEART study in the NEJM, and other using the apple watch to take a 6 lead precordial EKG in other journal, can't remember the name right now).

If you can find this please update us!!
The Aura technology detects the RISK of heart failure before its development, i.e. in advance but does not make the diagnosis of AF after its development as in "new Apple Watch models". This is something different as can be seen from the US patent:
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=10463260.PN.&OS=PN/10463260&RS=PN/10463260
Score: 1 Votes (Like | Disagree)

Popular Stories

iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Generic iOS 18

iOS 18.4 Coming Soon With These New Features for Your iPhone

Tuesday March 25, 2025 6:45 am PDT by
Apple is expected to release iOS 18.4 to the general public as soon as next week, following more than a month of beta testing. Apple's website says some iOS 18.4 features will be released in "early April," so the update should be out as early as Tuesday, April 1. Apple this week seeded the iOS 18.4 Release Candidate, which is typically the final beta version, barring the discovery of any...
ios 19 messages app

Here's What Apple's iOS 19 Messages App Might Look Like

Tuesday March 25, 2025 11:52 am PDT by
Leaker Jon Prosser today shared a mockup of what he says the Messages app will look like in iOS 19, demoing an interface with rounded, translucent bubble-shaped navigation buttons at the top and softer, rounder corners for the keyboard and word suggestions. Jon Prosser's Messages app mockup The return button, a button for going back to the Messages list, and the FaceTime button have a deeper...
iCloud General Feature Redux

iPhone Users Who Pay for iCloud Storage Receive a New Perk

Thursday March 20, 2025 12:01 am PDT by
If you pay for iCloud storage on your iPhone, Apple has a new perk for you, at no additional cost. The new perk is the ability to create invitations in the Apple Invites app for the iPhone, which launched in the App Store last month. In the Apple Invites app, iCloud+ subscribers can create invitations for any occasion, such as birthday parties, graduations, baby showers, and more. Anyone ...
airpods max 2024 colors

Don't Buy Into Apple's Hype About AirPods Max Gaining Lossless Audio

Monday March 24, 2025 4:24 pm PDT by
Apple today announced that AirPods Max with a USB-C port will be gaining support for lossless audio and ultra-low latency audio with a firmware update next month, alongside the release of iOS 18.4, iPadOS 18.4, and macOS 15.4. For context, audio files are typically compressed to keep file sizes smaller. There are lossy compression standards like MP3 and AAC (Advanced Audio Codec), which...
macbook pro blue green

When Will Apple Release the M5 MacBook Pro?

Wednesday March 26, 2025 4:53 pm PDT by
Apple regularly refreshes the MacBook Pro models, and a new version that uses M5 series chips is in the works. Apple just finished refreshing most of the Mac lineup with M4 chips, and now it's time for the M5. Rumors suggest that we could see the first M5 MacBook Pro models this fall. Design There have been no rumors of a design update for the M5 MacBook Pro models that are coming this...
Apple Lumon Terminal Pro

Apple's Mac Site Features Fictional 'Lumon Terminal Pro'

Wednesday March 26, 2025 12:19 pm PDT by
Apple is going all out with promotions for the popular Severance Apple TV+ show today, and as of right now, you'll find a new "Lumon Terminal Pro" listed on Apple's Mac site. The Lumon Terminal Pro is designed to look similar to the machines that Severance employees like Mark S. and Helly R. use for macrodata refinement. The Terminal features a blue keyboard, a small display with wide...
Generic iOS 19 Feature Mock

Gurman: Jon Prosser's iOS 19 Mockups 'Aren't Representative' of Redesign

Tuesday March 25, 2025 4:47 pm PDT by
The iOS 19 mockup images that leaker Jon Prosser shared today are not representative of the actual iOS 19 design, Bloomberg's Mark Gurman said on social media. According to Gurman, the images that are "floating around" are based on "very old builds" or "vague descriptions," and are lacking key features. Gurman says that we can "expect more from Apple in June." Gurman made the same comment ...