Your Nike+ FuelBand SE or first generation FuelBand should fit snugly and comfortably on your wrist, like a watch.
To maximize your NikeFuel earning power, wear your device on your dominant hand. If you opt to wear it on your other wrist, you can change the orientation of the LED display in your settings.
The FuelBand is optimized to best track wrist-based movement. Results may vary if you wear your device elsewhere on your body.