- An expansion device for the Wii Remote video game controller that allows it to more<br />accurately capture complex motion<br />- It tracks player's movements in finer detail and with greater accuracy<br />- This simple、 optional attachment shall enhance the pleasure for playing the Wii<br />- The sensor in the device supplements the accelerometer and Sensor Bar capabilities<br />of the Wii Remote to enable actions to be rendered identically on the screen in real<br />time<br />                                                                                                                                Dimensions: 1.73 in x 1.61 in x 1.26 in<br />Weight: 2.05 oz