Features: This powerpoint presenter allows you to control images from up to 20 meters away. 2.4GHz radio frequency technology, stable transmission With the functions of page up, page down, full screen, switch windows and hyperlinks. The 200 meters long red pointer makes it easy for people to find the key point. With the USB receiver, you don't need to download any software. Package includes: 1 pc Presentation Clicker Specifications: Name: Presentation Clicker Material: ABS Color: Black Power supply: 2xAAA batteries (not included) Size: approx. 116x37x28mm/4.57x1.46x1.1in Note: Due to different monitor and light effects, the actual color of the item may be slightly different from the color shown in the pictures. Please allow slight measurement deviation due to manual measurement.