Google Fitbit Air Red

Screenless — you wear it like a small wristband and view everything on your phone. Tracks steps, heart rate, calories, distance and activity. Tracks sleep stages and Sleep Score. Measures things such as SpO2, heart-rate variability, breathing rate and skin-temperature variation. � blog.google +1 Can monitor heart rhythm and provide AFib/irregular-rhythm notifications where supported. � Google Help Up to about 7 days of battery. Works with Android and iPhone. Data is viewed through the Google Health app. Starts at US$99.99 in Google's store. � Google Store Some advanced features require Google Health Premium.