-2-4GHz-Wireless-Optical-Stylus-Touch-Pen-Mouse with wave browsing. -Laser-Presenter-PPT-DPI S2D 1690 Overview Quick Details Products Status: Used Application: Desktop, Laptop, Meeting/Office/Home/ Type: 2.4Ghz Wireless Interface Type: USB DPI: 800/1200/1600dpi (Cyclic switch) Tracking Method: Optical Style: Mini, Pen Shaped Hand Orientation: Both Hands Brand Name: Promi or Customized Model Number: PR-08 Place of Origin: China (Mainland) Color: Black, Blue, Gray, Red, White Model No: PR-08 2017 smart pen Product Name: manufacture pen shaped e smart pen mouse with laser presenter As a Gift: For Business/Teacher Children Packaging & Delivery