Bright Green Light Clear and Eye-catching Instructions: LED LCD screens, curtains, and other demonstration scenes can be used Independent LCD Display A Professional Smartwatch: Exclusively equipped with a 0.96 inch TFT LCD display, the time, date, signal, and power are clear at a glance Plug and Play Free Download and Installation: Plug the receiver into the device for automatic recognition, you can use a physical laser, page up/down, full screen, black screen 200 Meters Remote Control: Separate 360° Omni-directional information transmission, no matter which angle the page is turned, it can be received accurately Automatic Wake-up Function: Automatically sleep for 5 minutes when the page-turning pen is inactive, and automatically wakes up when it is used Specifications: Basic functions: page up and down, full-screen black screen, green light Special functions: display time, date, power, countdown function Support system: compatible with Mac OS, Android, Windows series Support software: PDF, WPS, Prezi, web page, office software, etc. Battery capacity: 400mAh Interface: Type-C Working voltage: 3.0-4.2V Product size: 139x28x14mm Weight: 46.3g