I tested the heart rate accuracy of the Whoop Strap 3.0 worn on the wrist and biceps.
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📹Fitbit Videos📹
Fitbit Charge 3/4 Sleep:    • FitBit Charge 4 Ultimate Sleep Test  
Fitbit Charge 4 Heart Rate:    • Fitbit Charge 4 Review: Heart Rate Ac...  
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📹First Garmin Venu Sq Video📹
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📹Oura Ring videos📹
Sleep Test:    • Oura Ring Scientific Sleep Test (Review)  
HRV Test:    • Oura Ring Review: Heart Rate Variabil...  
Temperature Test:    • Oura Ring Ultimate Temperature Test (...  

📹Withings Scanwatch videos📹
Unboxing and first review:    • Withings Scanwatch Review (Heart Rate...  
Sleep test:    • Withings Scanwatch Sleep Test (Review)  
Heart rate test:    • Withings Scanwatch Heart Rate Test (R...  
Q&A with Withings:    • Scanwatch Q&A: Answers from Withings  

⏱️This comparison is part of a larger project where I spend over 11 hours a week tracking everything in my life. If you'd like to know more:
   • This mad scientist scanned his brain ...   ⏱️

Timestamps:
00:00 General intro
01:27 Results: Overall Accuracy
06:24 Results: Wrist vs Biceps
10:15 Conclusions
10:55 Buy The Whoop Strap?
11:24 Issues of the Whoop
12:50 Limitations

🎵Music🎵
(1) Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...)
Artist: http://www.twinmusicom.org/
(2) Wonders by JVNA
(3) Can’t Sleep (YouTube Audio Library)
(4) Classique (YouTube Audio Library)
(5) Blurry Vision (YouTube Audio Library)