Meet the ViATOM Blood Oxygen Saturation Monitor: a smart wearable device that stays around your wrist and records your heart rate, motion, and blood oxygen saturation level through the night. It can nudge you when your level falls below your defined level.
More gadgets like this: here
The ViHealth iOS & Android app provides you with real-time data and trends. The device has a battery that lasts up to 16 hours.
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