Welcome to the store! The product's plug-and-play integrated design is easy to carry and not easy to lose. Ergonomic design, unique curved design, will not feel sore when held for a long time. The product is made of finely frosted material, comfortable to the touch, simple and elegant. The simple button layout and suitable size make it easy to use in the demonstration by simply moving your thumb. The connector connected to the computer is made of metal, which is more firm and reliable during the product's plugging and unplugging process. Item Type: Page Turner Pen Material: ABS Product Size: Approx. 10.9 x 4 x 2.5cm / 4.3 x 1.6 x 1in Battery Model: 1 x AAA battery (shipped without battery) Supported Operating Systems: For Win 2000/XP/Vista/Win7/Win8/Win10/OS X/Linux. Interface: USB1.1, USB2.0, USB3.0 Control Distance: Approx. 10 ~ 15 meters / 32.8 ~ 49.2 ft (the effective distance varies depending on the environment.) 1 x Page Turner Pen 1 x User Manual Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!