Smart rings can track steps taken, distance traveled, Sleep Monitor, Multisport Tracker, Sedentary Reminder, Body Temperature Monitor, Activity Tracker, Pedometer, Oxymeter (SpO2) Wireless Charging, Heart Rate Monitor. Smart rings are typically small and lightweight, so they can be worn comfortably all day long. Smart rings are typically made from durable materials, such as titanium or ceramic, so they can withstand everyday wear and tear.