How do I replace the battery in the Air Gesture Wristband?

Open the battery cover in the direction of the arrow until it is completely removed, then insert the new 3V (CR2032) batteries and replace the cover. When the wristband battery is low, it will start flashing red, and after 5 minutes of play it will power off automatically. Two 3V CR2032 batteries are included in the box. (Page 13)