This fits your. Make sure this fits by entering your model number. The interactive Talking Hot Dots Pen brings Hot Dots card sets and storybooks to life with lights, sounds, and kid-friendly phrases! Simply review the question or activity, then press the pen to the dot next to the correct answer for an immediate audio-visual response. Correct responses receive cool, kid-friendly phrases; incorrect responses receive gentle redirection. Works with any Hot Dots or Hot Dots Jr. set! Perfect for independent study and learning; enables students to work at their own pace. Requires 2 AAA batteries (not included). Not compatible with Hot Dots Tots sets.