Children will have a blast building and racing on this fast and fun Techno Gears Marble Mania Twin Turbo Trax. After completing the build kids can compete against each other as they race their marbles through this exciting turbo marble speedway. Fun sound effects add to the excitement and the winning time shown on an LED display. Colors may vary. Requires two "AA" batteries and two button cell batteries. "We manufacture the longest running marble run on the market, " Sherri Borrelli, Sales Administrator for The Learning Journey International, told TDmonthly. Launch date: May 2011.