"Selfie" typically refers to self-portrait photos taken with the camera held at arm's length or pointed at a mirror, as opposed to those taken by using a self-timer or remote. A selfie stick can be used to position the camera farther away from the subject, allowing the camera to see more around them.

To pair the device with your camera, follow the instructions found here:
https://selfiestickstore.com.au/instructions-for-bluetooth-selfie-stick-setup/

Or watch the video:
https://www.youtube.com/watch?v=uAN4-aqQYtM