Interactive Pen - Orange (marked with orange at base) is for use with BrightLink 475Wi 480i 485Wi 575Wi 585Wi 595Wi and BrightLink Pro 1410Wi interactive projectors. It is one of two interactive pens that can be used for simulatenous use on the BrightLink 475Wi 480i 485Wi 575Wi 585Wi 595Wi or BrightLink Pro 1410Wi. To use simultaneously the other pen must be Interactive Pen B - Blue (marked with blue at base).Key Features- Provides interactive drawing and mouse capabilities for BrightLink 475Wi 480i 485Wi 575Wi 585Wi 595Wi or BrightLink Pro 1410Wi interactive projectors- Uses single AA battery- On/off power button with sleep mode to prolong battery life- 940nm IR frequency