The Apple Mouse (formerly Mighty Mouse) is a multi-control USB mouse manufactured by Mitsumi Electric and sold by Apple Inc. It was announced and sold for the first time on August 2, 2005, and a Bluetooth version was available from 2006 to 2009. Before the Mighty Mouse, Apple had sold only one-button mice with its computers, beginning with the Apple Lisa 22 years earlier. The Mighty Mouse supported two buttons, and a miniature trackball for scrolling. On October 20, 2009, the wireless Mighty Mouse was discontinued and replaced by the multi-touch Magic Mouse. The wired version of the device remained available, but was renamed the Apple Mouse, due to trademark issues with another manufacturer of a device named Mighty Mouse. As of June 5, 2017, the Apple Mouse is no longer available to buy on Apple's website. Design The Mighty Mouse is made of white plastic and has a recessed Apple logo on the mouse's face. The mouse has four functional controls: a left capacitive sensor, a right capacitive sensor, a track ball with a pressure sensor and side squeeze sensors. The track ball enables users to scroll a page or document in any direction, including diagonally. Instead of mechanical buttons, the touch-sensitive topshell (mentioned below) and the pressure-sensing trackball allow the mouse to detect which side is being touched or whether the trackball is being held in. The mouse emits a faint clicking sound when the scroll ball is rolled or the side squeeze sensors are depressed, but this is not directly caused by the ball moving or side buttons being pressed; the sound is actually produced by a tiny speaker inside the mouse. There is no way to disable this feature other than physically disabling the speaker inside the mouse. Currently, Mac OS X is the only operating system that fully supports the mouse without third-party software. When used with Mac OS X, the sensors can be set to launch applications or trigger features of the Apple operating system, such as Dashboard and Exposé. If not used with Mac OS X, the mouse behaves as a four "button" mouse with a vertical and horizontal scroll wheel. There are third-party drivers (including XMouse) that provide more functions to users of other platforms such as Windows. The Mighty Mouse does not report whether the right and left sensors are activated simultaneously. It reports a right-click only when there is no