1This demo clicker is equipped with a digital laser that is safe and reliable and has excellent performance on LED/LCD screens. The size and color of the digital laser spot of the ppt clicker can be easily adjusted. 2PPT highlight remote, allowing you to highlight or zoom in on the screen, freely control the cursor on the screen, play and pause the video, open the link, and display the full screen/black screen. You can interact with a variety of content through this USB PPT clicker. 3This wireless presenter comes with built-in timers to help you manage your time perfectly from the first slide to the last slide. Set timing milestones in the app and receive vibration alerts directly. The voice prompt for this presentation laser pointer reminds you to unplug the receiver after the presentation. 4This slide remote is very easy to operate. The demo laser indicator comes with software installed on the extra TF card of the USB dongle. This TF card can also be used as a USB stick for storing presentation files, so simply plug the demo laser pointer into the computer's USB port to boot. 5The for Tripsky Wireless Presenter uses a new technology that replaces traditional laser pointers that used to hurt the user's eyes by following three unique digital scene modes. (1) Projector lamp mode. (2) Magnifying glass mode. (3) Digital laser mode. It makes the presentation even better and clearer. Item Type: Laser Pen Wireless Modulation Mode: GFSK Modulation Frequency: 2.4~2.4835GHz Transmission Power: 5 dBm Working Current: border: 1px solid000important;}Page Flip Pen x 1Charging Cable x 1Storage Bag x 1Instruction Manual x 1USB Receiver x 1Traditional lasers can be harmful to the eyes if they are misused, unlike safer digital lasers.