Educational Insights Hot Dots Talking Pen, Set of 6 (New Silver Color) Works with dozens of Hot Dots and Hot Dots Jr. books, activities, and card sets  just press to an answer dot for an immediate audio visual response. Includes six interactive Hot Dots Talking Pens, each with brand new, sleek, silver design, 17 speech and sound effects, and flashing lights. Compatible with all Hot Dots and Hot Dots Jr. sets. Requires 2 AAA batteries (not included).