Xiaomi Mi Band 5 rumored to gain SpO2 sensor, Smart version will support Amazon Alexa

The upcoming Xiaomi Mi Band 5 will enhance the heart rate tracker with SpO2 measurement (blood-oxygen saturation). Additional health features will include menstrual cycle tracking. The international version was said to gain NFC support, previously exclusive to China. However, some new info casts doubt on global NFC support, but mentions a new “Mi Smart Band…