Fitbit unveils Alta HR with heart rate monitoring, available at the end of March for $150; Alta HR, Blaze, and Charge 2 get improved sleep tracking Valentina Palladino / Ars Technica : Ars Technica 2017-03-07 Valentina Palladino Alta, Alta HR, Valentina Palladino, Charge 2, Fitbit Related Coverage View article investor.fitbit.com View article TechSpot View article Engadget View article Windows Central View article Neowin View article The Next Web View article Fitbit Blog View article Android Police View article Android Authority