Withings ScanWatch 2 review

Withings ScanWatch 2 is for someone who wants a traditional looking watch that still records medical-grade heart data. You rest a finger on the metal bezel and the watch records a single-lead ECG in 30 seconds; Withings says its ECG App is cleared by the US Food and Drug Administration under 510(k) K240795. It also tracks overnight HRV, a Breathing Quality Index, blood oxygen levels and 24/7 temperature with variation notifications, and a Withings+ trial adds cardiologist review of an ECG within 24 hours. Battery is the headline at up to 35 days, with a full charge in 2 hours. The watch works with iOS and Android, is 5 ATM water resistant and shows incoming calls and app notifications. Because it is a hybrid with a small display, the US page lists no message replies, third party apps or wallet payments, so it does not cover the payments part of this list. At $369.95 for either the 38mm or 42mm case, it is the best fit for health first buyers.

Who it is for

people who want a classic watch with medical-grade ECG

Price

$369.95 for 38mm or 42mm.

ScanWatch 2 42mm Black $369.95 USD
Quoted from the vendor pricing page on November 13, 2026.

Key features

• 30 second single-lead ECG by resting a finger on the bezel
• Withings ECG App cleared by the FDA (510(k) K240795)
• Up to 35 days of battery, fast charging in 2 hours
• 24/7 temperature tracking with temperature variation notifications
• Overnight HRV, Breathing Quality Index and blood oxygen levels

Strengths and weaknesses

• Strength: Longest battery on this list at up to 35 days
• Strength: Works with iOS and Android and shows incoming calls and app notifications
• Strength: HSA/FSA eligible on the Withings US store
• Weakness: Hybrid design with a small screen, so no message replies, apps or wallet payments listed
• Weakness: Cardiologist ECG review is tied to a Withings+ trial
• Weakness: Costs more than Amazfit Balance 2, which has a full touchscreen

Key facts

• Starting price: $369.95
• Phones: iOS and Android
• Battery: Up to 35 days
• Water resistance: 5 ATM (50m)
• ECG app: Yes, FDA cleared

Where it ranks

Withings ScanWatch 2 is No. 7 in our Best Smartwatches verdict.