Meet Fitbit Inspire 3™—the health & fitness tracker that helps you do what you love and feel your best. All you have to do is wear it. Features: Heart Rate Monitor, Pulse Oximeter Sensor, Temperature Sensor - Sleep Monitor, Smart Alarm, Phone, Text Messaging - Stress, Sleep Quality, Heart Rate, Body Temperature, Distance Traveled, Steps Taken, Calories Burned - GPS - 240 Hour - 1.55" - 0.73". Midnight Zen (Black) - Tracking, Health & Fitness, Swimming, Jogging, Hiking, Biking.