Samsung Galaxy Watch 4: Complete Scientific Review

I tested the Samsung Galaxy Watch 4 against a scientific sleep EEG device, and tested the Blood Pressure, SpO2, Heart Rate and Step Counting accuracy. Subscribe to my weekly Newsletter(!) on www.robterhorst.com
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👇Amazon Affiliate* (paid) links. Supports the channel, doesn't cost you any more!👇
Fitbit Luxe: https://geni.us/Fitbit_Luxe
Fitbit Charge 4: https://geni.us/wjAfjU
Fitbit Sense: https://geni.us/CSfYQE8
Fitbit Inspire 2: https://geni.us/iZHlb

Xiaomi Mi Watch: https://geni.us/Xiaomi_Mi_Watch
Xiaomi Mi Watch Lite: https://geni.us/XiaomiMiWatchLite

Apple Watch 40 mm: https://geni.us/0gNGeO
Apple Watch 44 mm: https://geni.us/7Dom

Huawei Band 6: https://geni.us/HuaweiBand6
Honor Band 6: https://geni.us/honorBand6

Want to buy the Galaxy Watch 4 despite me not recommending it:
https://geni.us/GalaxyWatch4

📸My Gear* (paid link)📸
Camera body (main): https://geni.us/SonyA6600_body
Camera lense (main): https://geni.us/sony_sel_18-135
Camera (B-roll): https://geni.us/CanonEosM50MarkII
Light: https://geni.us/Godox_VL150
Softbox: https://geni.us/NiceFotoSoftbox
Light stand: https://geni.us/WalimexLightstand

*My opinions are completely my own. However, I do earn a small commission if you purchase any of these devices via my affiliate links.

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

📹Fitbit Videos📹
Fitbit Charge 3/4 Sleep: https://youtu.be/NYRq4ahPJ2c
Fitbit Charge 4 Heart Rate: https://youtu.be/xAv6dyPd9ns
Fitbit Sense First look review and test: https://youtu.be/w6D_uUDUP2k
Fitbit Sense Heart rate: https://youtu.be/7-u8VTmeDF0

📹Apple watch videos📹
Sleep Cycle App: https://youtu.be/fjPng54_CtE
Steps: https://youtu.be/YbstQVHEVz4
Test: https://youtu.be/0Ub7qmZz9ec

📹First Garmin Venu Sq Video📹
https://youtu.be/LiwX2TxYpQo

📹Oura Ring videos📹
Sleep Test: https://youtu.be/atWcp6FmnbE
HRV Test: https://youtu.be/AK47cav1i28
Temperature Test: https://youtu.be/VIfvRzP79Bs

📹Withings Scanwatch videos📹
Unboxing and first review: https://youtu.be/swQLhrdxEkk
Sleep test: https://youtu.be/lWPxpdUjLBI
Heart rate test: https://youtu.be/KjemOE2eHcY
Q&A with Withings: https://youtu.be/KtRh-_9kXgM

⏱️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:
https://youtu.be/8iPWu0Cbq14 ⏱️

Timestamps:
00:00 General intro
01:05 Galaxy Watch 4 Basic Info
02:22 Results: Sleep Test Setup
02:59 Results: Sleep Test Comparison
06:53 Results: Sleep Test Overview
08:40 Results: Waking Up/Falling Asleep
09:32 Results: Versus Other Devices
10:00 Results: Heart Rate Test Spinning
12:29 Results: Heart Rate Test Cycling
14:01 Results: Heart Rate Test Longboard
14:29 Results: Heart Rate Test Weights
16:02 Results: Blood Pressure Test
19:36 Results: Oxygen Saturation (SpO2)
21:51 Results: Step Test
22:54 Conclusions
23:37 Buy The Galaxy Watch 4?
24:15 Limitations

🎵Music🎵
(1) Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
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)
Person Waking up Video by Ba Tik from Pexels

Видео Samsung Galaxy Watch 4: Complete Scientific Review канала The Quantified Scientist