SMART Board 500/600 Series Replacement Pens – Set of Four

20-point-touch, the latest infrared sensor technology 20 users can write simultaneously. Intelligent gesture-recognition Also, write with a normal stylus pen. Easy to clean and self-maintained: A normal brush and even a wet cloth can clean Aluminum NANO surface USB direct power supply, and also for updating and data transfer. Oxidized aluminium frame, giving it an elegant grey finish.