Wii Controller

The primary Wii controller, known as the Wii Remote or the Wiimote, unlike traditional video game controllers, has a one-handed remote control-based design. The Wii controller features an Analog Devices ADXL330 accelerometer and a PixArt optical sensor. Perhaps the most notable Wii remotes feature is its ability to sense motion that allows a player to interact and manipulate with on screen items via movement and pointing by means of accelerometer and optical sensor technology. The Wii controller senses light from the console's Sensor Bar and sports base-level rumble and audio functionality. The Wii Remote is powered by two AA batteries and contains a 16 KiB EEPROM chip. To prevent the remote from slipping out of the player’s hand, when the player is in action, the Wii Remote comes with a strap to attach the device to the wrist.

Also notable in the Wii remote, is the fact that it is "expandable", as it can be attached to and used in conjunction with "secondary Wii controllers", marketed by Nintendo as attachment controllers. Secondary controllers for the Wii are Nunchuk, Classic Controller, Wii Zapper and Wii Wheel, which can be connected to the Wii Remote by means of an expansion port at the bottom of the Wii controller. Besides theses there are many third-party accessories attachments for the Wii.