Get the Fitbit App and install it.

Step 1. Download the Fitbit App to your laptop, phone, or other portable device to which you’d like to connect your smartwatch.

Step 2. Download the Fitbit App from the Play Store if you have an Android smartphone.

Step 3. Download the Fitbit App from the Apple Store if you have an Apple device.

Step 4. If you’re using Windows OS and want to link your smartwatch with your computer or tablet, go to the Microsoft Store and download the Fitbit App

Step 5. After Downloading double click on setup file and Install it.

For More Details Click Below