E1 The Promethean ActivPen 4T3/4S3 Teacher Digital Pen is a smart and interactive tool designed for use with smart boards in a classroom setting. This digital pen allows teachers to write and draw on the interactive board, making lessons more engaging and interactive for students. With its sleek design and advanced technology, the Promethean ActivPen offers a seamless and intuitive writing experience, perfect for enhancing educational activities in the classroom.