Among the wearables, Apple Watch is very popular. It provides one with the health insights and could become a life saving device. It is a watch–cum–fitness tracker. It measures B.P., heart rate, and even takes an ECG. It also tracks the mindfulness and sleep. Its latest series is called Series 7. Its available in 41 mm and 45 mm sizes. There is Blood Oxygen App available on it to measure the oxygen saturation in the blood. It generates an ECG with built-in electrodes. It captures the electric signals of the heart showing arterial fibrillation (irregular heart rhythm) or sinus rhythm ( normal heart rhythm). It captures the heart rate and gives alerts. It tracks the menstrual cycle. It tracks activity and workouts. It has an all-day 18-hour battery life. It has faster charging. Its estimated price is Rs.54000.