6 years & up. It's interactive learning fun, with an all-new look ! Press the sleek, silver Hot Dots® Talking Pen to an answer dot on any Hot Dots® or Hot Dots® Jr. question for instantaneous visual and audio feedback! Features 17 speech and sound effects and flashing lights. Compatible to all Hot Dots® and Hot Dots® Jr. sets. Pen requires 2 AAA batteries (not included).