While Xiaomi has been stingy with the teasers, a leak shows several new features on the Mi Band 5 that will entice you to pick it over the new NFC-enabled Mi Band 4. The 5 will have NFC functionality as well, enabling mobile MasterCard and public transport payments. NFC and mobile payment support • Exercise modes The band will also have stress and breathing management features, likely tied into the new SpO2 sensor. There will be a stress meter as well as breathing exercises to help you relax. Additionally, there will be a Do Not Disturb mode, which silences alarms for a limited...