INFINITER Gyro Mouse Red Laser Presenter, Powered by 2 AAA batteries - INCLUDED! (LR-12R Pro) with a draw function to underline within a PowerPoint presentation LR-12R Pro - A professional gyro wireless mouse presenter with red laser and Gyro Wireless Mouse Function all built into one unit. A must for professional presentations. Notice: This product is only authorized to be sold by Quarton USA. If you buy it from another seller in China, then the item you will receive is definitely not INFINITER presenter. Please immediately report to Amazon that you receive a fake from a seller in China. Sturdily constructed body with big button control-key and rubber coated finish prevents slipping and offers the most advantageous assistance for your presentation and training. Unique and practical hot key functions include: page down, page up, play/ESC, screen blank/back and full function gyro wireless mouse function with PowerPoint Pen/Eraser function. Sure to assist you in making a smooth and professional presentation. Just hold the ergonomic device in your palm like a remote controller and the cursor will easily follow your hand movement to control a range of rich content interaction. The unique pen/eraser function is activated by the gyro wireless mouse and helps you to draw a line or enables you to free draw a remark on any slide to highlight key points in your presentation. Works flawlessly on Windows. OS supported for Windows 10, Windows 8, Windows 7, Vista, XP, or later models. Plug-and-play, no software required, docking bay for receiver, two AAA batteries (included) for 10 hours operation time. Built-in Auto-Power-control circuit to meet FDA safety regulations. Output power: FDA Class IIIa, output power 1-5mW (power control under 3mW). One year warranty: return your INFINITER LR-12R with your Order ID to our warehouse in California and we will send a brand new replacement for you.