Key Features . Stainless Steel CaseSleep TrackingHealth and; fitness tracking1.36 DisplayWater resistant to 5ATM + IP68Only compatible with Android devices4G Connectivity . Strap in and start movingStay comfortable all day long with the Ridge Sports Band. Its fluoroelastomer material keeps the band durable and sweat-resistant while maintaining a firm fit on your wrist to suit your active lifestyle. Don\'t just listen to your body. Know it.Track your fitness progress with our first smartwatch that conveniently measures body composition. Get to know your body fat percentage skeletal muscle body water and more to achieve your goals. The Samsung BioActive Sensor and our fastest chip brings the biggest innovation to Galaxy Watch yet. Name a workout. It can track it.Track your activities and fitness scores on your watch and phone. Count steps check calories and stay on the grid with GPS. Galaxy Watch4 Classic detects physical activity to track your routines and supports more than 90 exercises for a more accurate report of your workouts. All the data your heart desiresMeet the Samsung BioActive Sensor that measures ECG and blood pressure in real time. After initial calibration the sensors quickly check your blood pressure. You can also check abnormal heart rate and rhythm through ECG and send data straight to your phone to be easily shared. The most holistic sleep analysis on Galaxy watchThe sleep tracker detects and holistically analyses your sleep stages while you rest. Improved measuring options let you check your blood oxygen levels and snoring patterns (not saying you do). Plus get advanced insights from the National Sleep Foundation for better sleep quality and duration..