DescriptionThe item is a portable and multi-purpose wireless presenter, which adopts 2.4GHz wireless transmitting technology, and can freely operate your powerpoint up to 20 meters away. Built-in pointer can highlight key points and support page up and down. Therefore, it is really a wonderful wireless presenter for teaching or presentation use.Feature- Color: Black.- Material: ABS.- Size: Approx. 11.2 x 3.5 cm / 4.4 x 1.4 inch.- Technology: 2.4GHz.- Distance: 20 meters.- Distance: more than 200 meters.- Battery: 2 x AAA battery.- Battery Capacity: 300mA.- Standby Current: less than 30uA.- Weight: 38g.- USB Receiver Operate System: Windows, Mac.- Compatible Interfaces: USB 3.0, USB 2.0, USB 1.1.- Compatible System:Windows, OS X, Linux, Android.- Working Voltage: 4.5-5.5V (USB bus powered).- Function: Red , page up and down, all screen, black screen.- Compatible withWindows, OS X, Linux, Android system, also can be used for website operation.- Embedded design. The USB receiver can be embedded in the presenter, more portable and convinient.- distance is up to 20 meters, built in pointer helps to highlight key points.- Applicable for teaching, business conference, presentation and so on.