Fire-Boltt Ninja is one of the best smartwatch under 4000

This smartwatch is available in 5 different colours.

Fire-Boltt Ninja Calling has 1.69 inches HD Full Touch Screen with a 240*280 pixel HQ Resolution.

Fire-Boltt Ninja Calling enables you to make and receive calls directly from your watch via the built-in speaker and microphone.

Fire-Boltt Ninja Calling Smartwatch comes with 30 sports tracking feature.

This smartwatch has sp02 monitor, Heart rate monitor and sleep tracking.

The Fire-Boltt Ninja Calling smartwatch has IP67 Splash resistant.

this smartwatch has AI Voice Assistance