Description
- This classic novelty drinking bird is a scientific wonder
- Dip head in water and the liquid inside will flow upside down to make Duncan bob
- This seemingly simple device uses the principles of thermodynamics to maintain a constant bobbing motion
Product Specifications
Approx. Dimensions (Packaging): 19 (H) x 5 (W) x 5 (D) cm / 7.4 (H) x 2 (W) x 1.8 (D) inches.Length : 4.5 cm | Width : 5 cm |
Height : 18.5 cm |
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