Realme's latest TechLife R100 smartwatch comes with continuous SpO2. It also warns you when blood oxygen drops below a certain level,
Xiaomi's latest fitness band- the Mi Band 7 now measures blood oxygen levels throughout the day. It can vibrate and remind in time when blood oxygen is low to protect your health.
GOQii Vital 4.0 is a fitness band with continuous SpO2 monitor. It can measure your blood oxygen levels during sleep and gives you an idea of variations in blood oxygen levels.
Redmi Watch 2 Lite smartwatch from Xiaomi features continuous SpO2 measurement during sleep. It measures your SpO2 level during sleep at intervals of 10 or 30 minutes
Huawei Band 6 comes with all-day SpO2 monitoring. It measures your blood oxygen throughout the day and notifies you with alert vibration if your SpO2 levels go too low.