REVIEW – Most of what I knew about my own health used to come from a yearly physical and whatever my smartwatch decided to tell me at 2am. The Body Scan 2 does a lot more than weigh you. It pulls a six-lead ECG, segmental body composition, and a handful of cardiovascular readings from ninety seconds of standing still and holding a handle. I’ve been stepping on it every morning for the last month, which is either the most consistent health habit I’ve ever kept or a sign of how easy this thing makes it to actually do.
Note: The Body Scan 2 was sent to me by Withings at no cost. They had no editorial input and did not see this review before it published.
Photos and video by Gregory Morley.
The Basics
The Body Scan 2 looks like an oversized smart scale until you notice the retractable handle, which is where most of the actual work happens. Step on, pull the handle up, and hold it while the scale runs weight, six-zone segmental body composition (arms, legs, and torso measured separately instead of one blended number), a six-lead ECG, impedance cardiography to gauge how efficiently your heart is pumping, and bioimpedance spectroscopy for a read on cellular and metabolic health. A daily scan takes about thirty seconds, while the longer Longevity Scan runs closer to ninety and is what fills out the 60-plus biomarkers Withings advertises.
One distinction is worth getting straight before any of that. The six-lead ECG and its AFib detection run on FDA-cleared software, and everything else here, body composition and the vascular and metabolic readings included, is classed as general wellness and explicitly not meant to diagnose anything. One of the features Withings leads with, glucose resilience, is still scheduled to arrive in the app before the end of the year.
What You Get
- Withings Body Scan 2 (Black)
- Charging cable
- Quick start guide
By the Numbers
- Price: $599.95
- Dimensions: 12.8 x 14.1 x 0.7 in
- Weight: 7.5 lbs
- Display: 3.5-inch color LCD, built into the handle
- Connectivity: WiFi and Bluetooth
- Battery: rechargeable, rated up to 15 months per charge
- Key measurements: weight, 6-zone segmental body composition, 6-lead ECG, impedance cardiography, bioimpedance spectroscopy, SpO2
- Warranty: 2 years
Design & Build
At 7.5 pounds and over a foot across, this isn’t a scale you tuck under a cabinet between uses. It claims a square foot of bathroom floor and stays there, and the black finish and retractable handle at least make it look like a piece of equipment rather than a bathroom scale that got confused about its job. The in-handle display turned out to be the detail I use most, showing readings right where I’m already looking instead of forcing a phone check afterward. The two thumb buttons on the handle run the in-scan surveys and the quick controls, and after a month I barely think about them at all.
Living With the Data
A month of daily weigh-ins turned this from a novelty into something closer to a dashboard. The segmental body composition is the feature that actually changed how I think about progress. A blended body fat number never told me much, but watching legs and torso move independently made it obvious where actual change was happening versus normal day-to-day water weight noise. The morning routine settled into something close to automatic. I step on, pull the handle up, hold still for the scan, glance at the display, and I’m done inside a minute. That’s short enough that I never once talked myself out of it. It does mean the most detailed record of my body anywhere belongs to a bathroom appliance, which I’ve decided not to examine too closely.
Accuracy Against a DEXA and a Seca Scan
Segmental body composition is the headline feature here, so I wanted a real answer to how close these numbers land to something clinical. I had a DEXA scan and a Seca body composition scan done at a professional clinic, then compared both against a Body Scan 2 reading taken the same day. DEXA is a low-dose X-ray scan that measures bone, fat, and lean tissue directly, based on how each absorbs two different X-ray energy levels, and it’s the closest thing to a gold standard in body composition. The Seca is a clinical-grade bioimpedance analyzer, the same basic technology as the Body Scan 2, a tiny electrical current run through the body to estimate tissue composition. The two are closer on paper than I expected. Withings runs thirteen frequencies through electrodes in both the glass and the handle, so the current travels hand to foot rather than only foot to foot, which is the same broad approach the clinical unit takes.
Weight was the easy part. DEXA, Seca, and the Body Scan 2 landed within three-tenths of a pound of each other, close enough that I’d trust this scale on weight alone without hesitation.
| Metric | DEXA | Seca | Withings Body Scan 2 |
|---|---|---|---|
| Weight | 249.8 lbs | 249.89 lbs | 249.6 lbs |
| Body fat % | 35.7% | 35.76% | 31.0% |
| Fat mass | 86.4 lbs | 89.37 lbs | 77.4 lbs |
| Lean / fat-free mass | 155.3 lbs | 160.53 lbs | 172.2 lbs |
Body composition is where it gets more honest. The Body Scan 2 read my body fat percentage about 4.7 points lower than DEXA and Seca, and separately, its fat mass reading came in 9 to 12 pounds lower than both. Those two gaps aren’t the same number wearing different units, they’re two independent measurements of the same real shortfall, and they roughly agree. It isn’t a defect unique to this unit either. Bioimpedance devices don’t measure fat, they measure resistance and then run it through an equation to estimate fat, and those equations are where two otherwise similar machines part ways. The Seca landed on DEXA’s number and the Withings didn’t, which points at the math rather than a shortage of sensors, and bioimpedance reading low against DEXA at higher body fat is a documented pattern rather than a Withings-specific miss.
Visceral fat, muscle mass, and estimated daily calorie burn (BMR) are also on the Body Scan 2’s readout, but none of them have a real comparator here. Withings reports visceral fat on its own 0 to 20 index instead of a physical unit, while DEXA and Seca report actual mass and volume, so there’s no shared scale to check it against. Muscle mass and BMR are Withings-only reads with nothing clinical to compare them to.
So I trust this scale on weight completely, and I read the segmental body fat trend as directionally useful rather than clinically exact. The gap isn’t a fixed offset either. It scales with how much body fat you’re carrying, so a leaner reader shouldn’t expect my 4.7 points and may well find it errs in the other direction. It’s still a genuinely useful tool for watching a number move in the right direction over months. Just don’t mistake it for a DEXA scan.
The ECG and Cardio Readings
Nothing alarming turned up in a month of scans, which is the only result anybody wants from a heart test, and the app lays the trend out clearly enough that a real change would stand out instead of hiding inside one confusing number. The ECG and the AFib check are the part of this scale running on FDA-cleared software, so they’re the readings I put the most weight on. The rest of the cardiovascular picture is wellness-grade by Withings’ own classification, good for watching a trend and not built to tell me I’m sick.
Battery and Everyday Use
I haven’t had to charge it once since setup, which lines up with Withings’ 15-month estimate and is a real relief compared to yet another gadget with its own charging cable to track down. It connects over both WiFi and Bluetooth, and since it lives in one spot and syncs to the app in the background, I’ve mostly just let WiFi handle the sync and left Bluetooth as the backup it’s there for.
What Could Be Better
At $600 this is a serious purchase for a bathroom scale, even one that does this much more than weigh you, and some of the app’s deeper goal tracking sits behind a separate BodyPath subscription on top of that. Withings’ own lineup makes the gap concrete. The basic Body is $70, the Body Smart is $130, and the Body Comp, which already does full body composition, is $230. The Body Scan this one replaces still sells for around $500. So $600 isn’t a small step up from a good smart scale, it’s closer to three times one, and what the difference buys is the six-lead ECG and the segmental breakdown. If neither of those is why you’re shopping, the cheaper end of that lineup covers weight and body fat for a fraction of it.
The segmental scan is also easy to lose by accident. If my arms drift in against my torso mid-measurement, the app quietly skips the segmental breakdown and saves the weight and body fat numbers alone, so now I stand there with my elbows out, making room on both sides for nobody in particular.
Watch the Review
Video review coming soon. The companion video is still in edit, and it will be embedded right here as soon as it goes up.
Quick Questions
Q: Does the Body Scan 2 have Bluetooth?
A: Yes, it supports Bluetooth alongside WiFi, so a direct phone pairing is available in addition to the WiFi app sync.
Q: Which of the heart features are FDA-cleared?
A: The six-lead ECG and its AFib detection, which run on Withings’ FDA-cleared Scan Monitor software. The other cardiovascular and metabolic readings are classed as general wellness and aren’t meant to diagnose anything, so I read those as trend data.
Q: How long does the battery last?
A: Withings rates it up to 15 months per charge, and it hasn’t needed a charge yet after a month of daily use.
Q: What does the segmental body composition actually measure?
A: Arms, legs, and torso measured separately instead of one blended body fat number, so you can see where change is actually happening rather than a single vague figure.
Q: How accurate is the Body Scan 2 compared to a DEXA scan?
A: Weight matched a same-day DEXA and clinical Seca scan within three-tenths of a pound, but body fat percentage read about 4.7 points low compared to both, a documented pattern when bioimpedance is measured against DEXA at higher body fat rather than a defect specific to this unit.
Final Thoughts
A month in, this is a genuine daily habit instead of a gadget I stepped on twice and forgot about, and the segmental composition and the cardio trend data are why. It isn’t a small purchase, and what it reports is a trend line rather than a clinic visit, but for anyone who wants to track more than a single number on the bathroom floor, it’s the most complete home setup I’ve used.
Price: $599.95
Where to buy: Withings
What I like: Segmental body composition that actually shows where change is happening, an in-handle display that keeps me from reaching for my phone, and battery life I haven’t had to think about once
What I don’t: $600 is a serious ask with some app features sitting behind a further subscription, only the ECG and AFib side is FDA-cleared while the rest is wellness-grade, and body fat % read about 4.7 points low against a same-day DEXA scan
