I comprehensively tested the heart rate accuracy of the Apple Watch Series 6. Subscribe to my weekly Newsletter(!) on www.robterhorst.com
Instagram:   / quantified_scientist  
Twitter: @QuantifiedRob

👇Amazon Affiliate* (paid) links. Supports the channel, doesn't cost you any more!👇
Apple Watch 44mm: https://geni.us/7Dom
Apple Watch 40mm: https://geni.us/0gNGeO

Fitbit Charge 4: https://geni.us/wjAfjU
Fitbit Sense: https://geni.us/CSfYQE8
Fitbit Inspire 2: https://geni.us/iZHlb

*My opinions are completely my own. However, I do earn a small commission if you purchase any of these devices via my affiliate links. It does not cost you any more money if you use these links.

📹Apple watch videos📹
Apple Watch Overall Test:    • Apple Watch 6 Accuracy (Sleep, Heart ...  
AutoSleep App:    • AutoSleep App Review: Apple Watch Sle...  
Sleep Cycle App:    • Sleep Cycle App Review: Apple Watch S...  
Steps:    • Apple Watch 6 Step Counting Accuracy ...  

The EEG tracker I used is called the Hypnodyne ZMax: http://hypnodynecorp.com/ from @HypnoDyne Corp

📹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...  
Fitbit Sense First look review and test:    • Fitbit Sense Accuracy (Sleep, Step co...  
Fitbit Sense Heart rate:    • Fitbit Sense Heart Rate Accuracy (Tes...  

📹First Garmin Venu Sq Video📹
   • Garmin Venu Sq Heart Rate Accuracy (t...  

📹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
01:28 Test: Background
01:55 Results: Heart Rate Accuracy
03:13 Results: Individual Training Sessions
05:05 Results: Two Apple Watches
06:25 Results: Versus Fitbit Inspire 2
07:51 Results: Versus Polar OH1+
09:02 Results: Versus Huawei GT2 Pro
09:31 Results: Versus Garmin Venu Sq
10:29 Conclusion
10:44 Should you buy it?
11:41 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)