The Mi Band 6 NFC features a 3.96 cm (1.56 inch) AMOLED color display with a resolution of 486 x 152 pixels, a battery life of up to 12 days, and a waterproof case up to a depth of 50 meters. Thanks to an SpO2 sensor, blood oxygen saturation is monitored, and heart rate is recorded throughout the day, along with sleep quality.