Calibration sets the start position for your device to ensure you achieve good posture. You will need to calibrate each time you connect your device or change position. Calibration is started by pressing the button at the top of the circle which will start a 3 second timer for you to assume a healthy posture. [insert image of screen] To properly calibrate, you must set yourself up in an optimal posture plane and then follow the prompts to take a couple breaths to achieve a healthy posture. You can stop the calibration early by pressing anywhere on the screen. After proper calibration the ball will be centered in the circle and you are now calibrated in healthy posture. The ball represents you! Now try leaning forward (Ball moves up), backward (Ball moves down), left (Ball moves left), right (Ball moves right) and see the ball move with you. Please Note: If the ball is moving in the opposite direction than expected,  the position or orientation of the watch could be reversed. You can either attach the clip or necklace to the opposite side of the watch to correct the orientation or adjust this through settings once you complete the setup. The dotted ring represents the difficulty ring (This can be resized by dragging with your finger or through settings). Try remaining out of healthy posture for a couple seconds and you will receive visual, sound and/or vibration feedback to correct your posture and return to the healthy posture zone. We have set up default notifications but you can customize all notifications in the settings.