Withings Steel HR 40mm – Hybrid Smartwatch with 25-Day Battery
🔥 #136 in Smartwatches · New Best hybrid smartwatch for classic style
Withings Steel HR 40mm – Hybrid Smartwatch with 25-Day Battery
Withings 3.6
#136
in Smartwatches
$309.99 →
As of Jul 13, 2026
AI-estimated. See how we score. How we score Affiliate link — we may earn a commission
01 / Spec
Top features
Platform OsWithings proprietary OS
Phone CompatibilityiPhone and Android
DisplayAnalog dial with OLED sub-display (40mm)
The Withings Steel HR is a hybrid smartwatch that blends traditional analog watchface design with smart health tracking. It runs on Withings' proprietary OS and works with both iPhone and Android via the Withings Health app.
Key features:
- Heart rate monitor (continuous) with fitness tracking
- Connected GPS (tethered to phone for route tracking)
- Sleep monitoring and activity tracking
- Smart notifications (calls, messages, calendar)
- Water resistant to 50m (5ATM)
- Exceptional battery life: 25 days on a single charge
- 40mm case in classic black steel
This watch appeals to users who want health tracking without the smart-device aesthetic—it looks like a traditional watch. However, it lacks an on-device GPS receiver, relying instead on phone-tethered tracking, which limits outdoor workout autonomy. No ECG, SpO2, or NFC payments. Best for iPhone/Android users seeking long battery life and a classic look over a feature-rich smartwatch experience.
02 / Signals
Why it's hot
Premium hybrid watch with exceptional battery—25 days between charges.
- Value for money 53
- Review rating & velocity 80
- Community sentiment 78
- Brand reputation 80
- Search heat 39
- Est. return & defect rate 75
03 / Verdict
Pros & cons
Pros
- Exceptional 25-day battery life
- Elegant analog dial design
- Works with iPhone and Android equally
- Continuous heart rate monitoring
- Lightweight and comfortable all-day wear
- Strong build quality and water resistance
Cons
- Connected GPS only (requires phone)
- No onboard GPS for true fitness independence
- No ECG or SpO2 monitoring
- Limited smart features vs. full smartwatches
- Proprietary OS with fewer apps
- No NFC payments or voice assistant
Platform OsWithings proprietary OS
Phone CompatibilityiPhone and Android
DisplayAnalog dial with OLED sub-display (40mm)
Case Size40mm steel
Battery~25 days
GpsConnected GPS (phone-tethered)
Health SensorsHeart rate (continuous), activity, sleep
Water Resistance50m (5ATM)
ConnectivityBluetooth, connected GPS
Weight~36g
05 / Your take
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05 / Compare
Compare the best alternative
One useful head-to-head in Smartwatches, with the rows most likely to separate the contenders.
Open full comparison → 
Apple Watch SE 3 (40mm GPS, Midnight Aluminum, Midnight Sport Band)
Battery (days)
25 days Longest battery 18 hours (daily charging required)
App Ecosystem
Minimal—Health app only, no 3rd-party apps watchOS App Store, Apple Health, strong integration
Display
Analog + small OLED sub-screen Retina LTPS with always-on (SE 3 refresh)
06 / Rivals
Compare with
07 / Variations
Other colors & sizes
08 / Browse
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