[2.4GHz Wireless Technology]: The laser pointer uses 2.4GHz wireless technology and is made of safe, environmentally friendly ABS material. The remote control range is up to 20 meters. You can operate the wireless presentation remote freely in any direction, including in low-light environments, where the red laser remains highly visible. [Note: Two AAA batteries are not included] [Excellent Design]: The laser pointer is compact and lightweight, featuring an ergonomic design with soft-touch buttons for comfortable, intuitive operation. It includes a built-in USB receiver for easy storage and portability. Compatible with Windows XP, 2000, 98, 7, Vista, macOS, and Linux. [Scientific Design]: The PPT clicker features a streamlined, contoured body that fits comfortably in the hand, with a non-slip back for secure grip and precise slide control. Functions include red laser pointer, black screen, next slide, previous slide, full-screen mode, and power button. [Easy to Use]: Plug-and-play operation — simply insert the USB receiver into your computer’s USB port. No software or driver installation required. To use, switch the power button to “On”. [Wide Application]: This presentation pointer is ideal for teachers, trainers, sales professionals, and event presenters for classroom instruction, business meetings, conferences, and seminars.