The red laser is ideal for emphasising important points in darkened surroundings 6-in-1 laser presenter: laser pointer, air mouse function, full screen / black screen at the press of a button, volume control, PowerPoint navigation, Digital Ink for digital writing Air mouse function: turns the presenter into a wireless PC mouse and allows commands with the right and left mouse buttons, as well as control of the mouse pointer. Includes: 1 x Receiver USB-A male, 2 x AAA batteries