Samsung watch 4 o2 sensor Clearance

Product Name: Samsung watch 4 o2 sensor Clearance
Accuracy ? Galaxy 5 Pro Watch o2 Blood Oxygen : r/GalaxyWatch Clearance, How reliable is the SPo2 readings on the Galaxy Watch 4. I'm surprised to see it this low. Can cold environments cause stuff like this? : r/ GalaxyWatch Clearance, Amazon.com: SAMSUNG Galaxy Watch 5 40mm Bluetooth Smartwatch w/Body, Health, Fitness and Sleep Tracker, Improved Battery, Sapphire Crystal Glass, Enhanced GPS Tracking, US Version, Gray : Cell Phones u0026 Accessories Clearance, Accuracy ? Galaxy 5 Pro Watch o2 Blood Oxygen : r/GalaxyWatch Clearance, Blood Oxygen During Sleep : r/GalaxyWatch Clearance.