Enhance the range and quality of your Wii gameplay. This officially licensed wireless replacement sensor bar is designed to extend the play range of your Wii system, providing maximum tracking performance to ensure that your every motion comes alive in your favorite games. Adjustable distance settings make the sensor bar ideal for use in large or small rooms, and a convenient one- or two-hour automatic shutoff feature helps conserve battery life for extended play. A low-battery indicator light provides you with a visual cue when the power is running low so you can minimize the chance of unexpected game interruptions.