A smartwatch is a wearable computing device that closely resembles a wristwatch or other time-keeping device. Other smartwatches are standalone devices with a specific purpose. For instance, some smartwatches collect data about the wearer's health, monitoring the wearer's heart rate, for instance.
HEALTH AND FITNESS
An activity tracker, also known as a fitness tracker, is a device or application for monitoring and tracking fitness-related metrics such as distance walked or run, calorie consumption, and in some cases heartbeat. It is a type of wearable computer.
QUICK MUSIC
Enjoy music and podcasts anywhere using your watch, without needing to carry a mobile device with you. You can stream music over LTE or Wi-Fi, or you can download songs and podcasts to your watch so you can listen to music while offline.

CALLS IN SMART WATCH
If your watch has a speaker, you can use your watch to answer incoming calls to your phone. If your watch screen is dim, tap the screen to wake up the watch. Play phone audio on watch.

STYLISH

One of the most attractive features of a smartwatch is its sleek and modern design, which makes it a perfect accessory for any outfit. Many smartwatches also come with interchangeable bands or straps, allowing users to customize their watch to match their style