This Green Science - Eco-Tech Bulb is a gravity and hand-powered light bulb. Crank the handle or attach a small weight to power the light bulb. Assembly required. Each piece is in a color box. 8.1 x 10.9 x 2.4 inches. Ages 5+
This Green Science - Eco-Tech Bulb is a gravity and hand-powered light bulb. Crank the handle or attach a small weight to power the light bulb. Assembly required. Each piece is in a color box. 8.1 x 10.9 x 2.4 inches. Ages 5+