Easily switch from Presenter Mode to Media Control Mode depending on your needs. Smart Link function means you only have to link the device onceeven after battery change or restart. 10-mode functionality. 2.4GHz technology with four auto-changeable channels. Works within 26-ft.of included USB receiver. Projection Distance: 26 ft; Class Type: 2; Barrel Color(s): N\A; Barrel Material: N\A.