Review on 🔋 HUAWEI Band 6 Fitness Tracker Smartwatch for Men and Women, 1.47" AMOLED Color Screen, SpO2 Monitoring, 24-Hour Heart Rate Tracker, 14-Day Battery Life, Female Cycle Tracking, 5ATM Water Resistance, Global Version - Black by Aneta Mrwka ᠌

The level of oxygen measures + - 10%, the function is just "for show". Shows either 91% or 100%, although on a real pulse oximeter it is stable 98% The level of stress is a very dubious function, sometimes it shows some bursts of stress, although there was nothing even close to stressful, and vice versa, in stressful situations it shows a low level, like Shaolin monks during meditation