New band faces, new attitudes 100+ Dynamic Band Faces With more advanced graphic rendering and smoother animation effects, both the exclusive dynamic band faces and the customlized ones become superior. Your favorite from your album is always on for you with AOD always-on mode. More options, more motives Supprts 110+ Sports Modes A wide varity of sports modes help you keep a track of the burned calories, heart rate changes, and workout durations. Going to the water with you 5ATM water resistance Support pool swimming, snorkeling, and intelligent recognition of the 4 common swimming styles. No Loose end on Your Health All-day SpO2 monitoring Blood oxygen saturation (SpO2) is a key indicator of a person's overall health, reflecting the oxygen levels in the blood. Xiaomi Smart Band 7 band will vibrate to alert you if your blood oxygen level is too low (<90%) to protect you from potential health risks. All-day heart rate monitoring Xiaomi Smart Band 7 tracks your real time heart rate all day long and delivers precise reviews in easy-to-read graphs. The band will vibrate to alert when your heart rates fall out of the safe zone. Sleep Quality Tracking The band monitors your sleep patterns with care and accuracy. You can find detail statistics regarding deep sleep, light sleep and REM phase on your smartphone to help you understand your sleep quality.