With E-Blox you can build 3D circuits directly into your brick structures, so they can come to life with light, sound or motion. Compatible with other popular brick products, they offer a great addition to any STEM program. Robyn is the helpful robot in Story Blox series, and her power figure lets the story come to life. Featuring green LEDs and red/green flashing LEDs, Robyn charges in one minute and offers up to 1 hour of illumination. Plus, she can be recharged as often as you want. Includes one power figure, battery block and charging adaptor block. Requires one 9 volt battery, not included. For ages 8 and up.