The Mi Smart Band 5 makes for a perfect health companion, with features such as activity tracking, workout modes and a 24/7 heart rate monitoring. Activities measured include steps, distance and calories burnt, as well as sleep monitoring, giving you a better understanding of sleep patterns and duration. The heart rate monitoring also has heart rate alerts that can be used to notify users when certain heart rate levels are entered. The band has a battery life of up to 14 days and and a 50m water resistance rating. Other great smart features include the ability to take a picture without touching your phone and it's multiple sports modes