SIDE BY SIDE

Compare products.

See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.

Change products

Product 1Product 2Product 3 (optional)Product 4 (optional)

Smart scale

Garmin Index S2

Index S2 Smart Scale, black (010-02294-02, also sold in white), Wi-Fi 2.4 GHz, four AAA batteries included

$199.99US price, checked Oct 24, 2026

Wi-Fi smart scale for up to 16 people with foot-to-foot body composition, $199.99

Check price at Garmin Full review →

Smart scale

Withings Body Smart

Body Smart, black (also sold in white), Wi-Fi and Bluetooth, four AAA batteries included

$129.95US price, checked Oct 23, 2026

Withings smart scale that reads body composition through the feet, $129.95

Check price at Withings Full review →

Criterion	Garmin Index S2	Withings Body Smart
US price	$199.99Checked Oct 24, 2026 · Price details in the review	$129.95Checked Oct 23, 2026 · Price details in the review
Three-year ownership estimate	$199.99 Incomplete known subtotal. Not included: annual consumables, energy use.	$129.95 Incomplete known subtotal. Not included: annual consumables, energy use.
Choose if	You want a Wi-Fi scale that syncs weight and body composition to Garmin Connect and can serve up to 16 people.	You want Withings' app, Wi-Fi sync and body composition readings from a scale without a handle or ECG.
Main trade-off	It costs $199.99, Garmin publishes no accuracy figure for the body composition readings, and every extra user needs a Garmin Connect account.	It reads through the feet only, Withings publishes no accuracy figure for it, and some people must switch off its body-fat readings.
Key specifications	Body composition method: Bioelectrical impedance. A small current runs from one foot through the body to the other foot, and Garmin lists no handle or hand electrodes. The pages checked give no frequency or electrode count. It reports body mass index, body fat %, body water %, skeletal muscle mass and bone mass, plus a 30-day weight trend. Garmin says bone mass is calculated from your age and lean body mass Weighing: Units: pounds, kilograms or stones and pounds, set with a switch on the underside. Maximum load 400 lb (181.4 kg). The pages checked give no display step or weight tolerance Profile inputs and modes: Uses date of birth, gender, height and activity level from your Garmin Connect profile. An activity class of 8 to 10 turns on Athlete Mode, which Garmin's FAQ names when body fat reads lower than expected. With socks on, the scale records only weight and BMI. A weight-only option turns off the other body composition data Users: Up to 16 people. The person who set up the scale invites up to 15 others in Garmin Connect. Each needs a Garmin Connect account and a connection to that person. Guest data isn't stored or synced. The scale tells users apart by weight and how often each person weighs in, so similar users can be mixed up Connectivity and app: Wi-Fi (2.4 GHz) syncs readings to Garmin Connect, and the scale stores up to seven networks. Garmin's spec also lists Bluetooth LE and ANT. Setup and settings are in the Garmin Connect app. The pages checked give no minimum phone operating system Battery: Four AAA alkaline batteries, included. Garmin says they last up to 9 months and tells you to use 1.5 V cells Display: A high-resolution color display that steps through your readings every few seconds, plus a weather widget that needs Wi-Fi. Garmin doesn't state its size or resolution In the box: Index S2, four AAA batteries, four carpet feet and documentation	Body composition method: Multi-frequency bioelectrical impedance through electrodes in the foot platform. Withings says the current runs through the lower half of the body. It reports body fat %, body water %, muscle mass, bone mass, visceral fat index and basal metabolic rate. The product page lists 250 kHz frequencies, while Withings' support FAQ says two frequencies between 5 and 800 kHz and a current under 1,280 microamps RMS Weighing: Four weight sensors. Range 9 to 440 lb (5 to 200 kg) in 0.1 lb (50 g) steps. Units: kg, lb and st lb Heart rate: Standing heart rate on the scale. No ECG, which needs the Body Scan's handle Users and modes: Recognizes up to 8 users. Athlete, Pregnancy, Baby and Eyes Closed modes per the product page, though the Body Smart FAQ lists no Pregnancy or Baby mode. No minimum or maximum foot size Connectivity and app: Wi-Fi 802.11 b/g/n and Bluetooth. Wi-Fi syncing means your phone doesn't have to be nearby. Needs the Withings app on iOS 18 or later, or Android 12 or later. Stores up to 16 weigh-ins when it can't sync Battery: Four 1.5 V alkaline AAA cells, included and already installed. Withings gives an average battery life of 15 months Display: 2.8 in color LCD, 320 x 240 pixels In the box: Body Smart, carpet feet, alkaline cells already installed and a quick installation guide (English, French, German, Italian and Spanish)
Exact variant	Index S2 Smart Scale, black (010-02294-02, also sold in white), Wi-Fi 2.4 GHz, four AAA batteries included	Body Smart, black (also sold in white), Wi-Fi and Bluetooth, four AAA batteries included
Dimensions	12.6 x 12.2 x 1.1 in (320 x 310 x 28 mm) and 4.4 lb (2.0 kg), per the specs tab of Garmin's product page. The maximum load is 400 lb (181.4 kg).	The tempered glass platform measures 12.8 x 12.8 x 1.1 in (325 x 325 x 25.6 mm), per Withings' product page. The page gives no weight.
Installation	No installation beyond setup. You pair the scale through the Garmin Connect app and connect it to a compatible Wi-Fi router. Garmin says you need both before you can use all its features. Garmin lists a 2.4 GHz Wi-Fi radio. The four AAA batteries are in the box, and so are four carpet feet for carpeted floors. Garmin recommends a hard, flat floor for the most accurate weight.	No installation. Four alkaline AAA cells are already installed. You set it up in the Withings app over Wi-Fi or Bluetooth, and it can't be set up from a computer. The box includes carpet feet and a quick installation guide.
Materials	A glass surface, per Garmin's manual and support FAQ. Garmin says wearing shoes or heels can damage the glass. The product page offers black and white designs. Other materials are not stated by the manufacturer.	High-strength tempered glass platform, per Withings' product page, which also lists a paint-free satin white casing and an ultra-slim design. It states no other materials.
Warranty	One year from the date of purchase, per Garmin's Consumer Limited Warranty. The terms, revised Dec 30, 2025, cover Garmin's non-aviation products and don't name the Index S2. Garmin chooses whether to repair it, replace it with a new or Garmin Recertified device, or refund the purchase price. The warranty excludes cosmetic damage, batteries unless a defect damaged the product, and damage from accident, abuse, misuse or water. You pay shipping to Garmin. A repaired or replacement device is covered for 90 days or the rest of the original year, whichever is longer. In the US, it covers only devices bought from Garmin or an authorized US reseller.	2-year quality guarantee, per Withings' product page. The US store's terms of sale describe legal warranties under French law. They give no US warranty terms.
Returns	30 days from receipt of a Garmin.com order, per Garmin's shipping and returns page. The scale must be in its original condition, and you start the return online with a return request. Garmin says opened software, downloadable items and custom products can't be refunded. The page doesn't say who pays return shipping. Bought from another store, the scale goes back to that store under its own policy, and Garmin says restocking fees may apply.	30 days from receipt, per Withings' refund policy. Withings' Body Smart FAQ counts the 30 days from the order date and says used scales can be returned. You start the return from your Withings account and send everything back with the label. The product page says free shipping and returns, but the policy says you pay return shipping after a withdrawal.
Unresolved questions	Any accuracy figure or DEXA comparison for the Index S2. Garmin gives none on the pages checked, and a Europe PMC search on Oct 24, 2026 found no study that validated it The data behind Garmin's claim that its readings compare favorably with DEXA, since it comes from a forum reply that names no study or figure The frequency, electrodes and equations behind the readings, which Garmin doesn't publish Whether the weight-only option stops the current Whether the limit is 16 people in total or 16 besides the person who set up the scale, since Garmin words it both ways The weight display step, a weight tolerance and the display size and resolution What replacement AAA batteries cost, since Garmin doesn't price them Which phone operating system versions Garmin Connect needs for setup Who pays return shipping on a Garmin.com return	Any accuracy figure or DEXA comparison for the Body Smart, since Withings gives none and no independent study was found The terms of Withings' 2-year quality guarantee in the US Whether returns are free, and whether the 30 days count from receipt, purchase or order, since Withings' pages disagree The scale's weight, which the product page doesn't give What replacement AAA batteries cost, since Withings doesn't price them Which modes it has now: the product page lists Athlete, Pregnancy, Baby and Eyes Closed, while the Body Smart FAQ says pregnancy mode is still to come

These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.