The Playstation Move is a motion sensing controller for the Playstation 3, being shaped like a wand and with an orb on top. It was released worldwide in September of 2010, with Japan getting it in October of 2010.
The Move controller use Bluetooth 2.0 wireless radio communication and has an internal lithium-ion battery. There is a mini-B port on the controller, which can be connected to an USB cable that connects to the PS3 for use with charging. Up to four Move controllers can be used at once, either with just 4 Move controllers or with 2 Move controllers in conjunction with 2 Navigation controllers.
The Move controller had its early stages back in 2001, when it was being researched in conjunction with the EyeToy for Playstation 2. It wasn't until 2008 that Sony began development on the Move, and it was unveiled to the public at E3 2009. The initial concept was to use the Dual Shock 3 with the Move, but some players found holding the Dual Shock 3 with one hand to be uncomfortable, which led to the development of the Navigation controller. In March of 2010, the final design and logo for the Move were revealed.
The orb on top of the Move is the main tracking mechanism for the device, in conjunction with the Playstation Eye, with it changing colors depending on the environment of the user, allowing for easier tracking. The size, shape and color are all used to determine the position of the Move, allowing it to be tracked in three dimensions, giving it high precision and accuracy.
There is a pair of inertial sensors inside the Move controller, as well as a 3-axis linear accelerometer and a 3-axis angular rate sensor. These are used to track rotation of the controller. There's also an internal magnetometer that calibrates the Move's orientation against the Earth's magnetic field.
As far as buttons go, the Move controller features a few buttons not present on the regular controllers. There's a Move button on the front, as well as small buttons mimicking the face buttons on the Dual Shock 3/Sixaxis. There's a Home button and Start/Select buttons on the left and right side of the controller. On the underside of the Move is a trigger (T).