How-To Fix & How-To Do - watchOS

Based on the iOS operating system of iPhone, WATCH was added to the Apple in April 2015, with the launch of the first smartwatch model, Apple Watch Series 1.

Development Apple Watch and watchOS, made it possible pulse monitoring (Heart Rate / BPM) and a the rhythm of the heartbeat (ECG / EKG), setting travel speed in a fixed time interval, the detection of specific movements sports and fitness training, alerting and detection for hand washing, monitoring sleep quality and more.