Bestsupply 2x White Motion Plus Adapter Sensor + Silicone Sleeve/cover/skin/case for Nintendo Wii Remote Controller 7-Days Unconditonal Refund,90-Days Warranty,Anytime Checking the Item Status Via USPS Website,Enjoying Your Shopping Fun!!! The Wii MotionPlus accessory attaches to the end of the Wii Remote and combined with the accelerometer and the sensor bar, allows for more comprehensive tracking of a players arm position and orientation, providing players with an unmatched level of precision and immersion. Every slight movement players make with their wrist or arm is rendered identically in real time on the screen, providing a true 1: 1 response in their game play Motion Plus accessory and sillicone sleeve for the revolutionary Wii Remote controller again redefines game control, by more quickly and accurately reflecting motions in a 3 - D space