Made of plastic Includes parts, colored pens and Requires 1 AA battery, not included Selected by University of Cambridge Science Festival Recommended for ages 8+ WARNING: Choking hazard. Small Parts. Not for children under 3 yrs.Assembly required.
Made of precut wood pieces with plastic hydraulics Includes step-by-step instructions for easy assembly in 1 hour Recommended for ages 10+ WARNING: Choking hazard. Small parts. Not for children under 3 yrs. Available in additional styles, sold separately.