Newton's LED Luminous Pendulum Balls,Newton's Balance Swing Ball,Glass Balls Desk Ornaments

• These glass balls are environmentally friendly, non-toxic and can be used for a long time.
• Very suitable for home decoration, study or desk decoration accessories. It is also suitable as birthday gifts and children's toys.
• Install the battery, it will light up on the substrate, the ball will look colorful and beautiful, very attractive.
• Great educational science gadgets. It does not show the pendulum, but also shows the law of conservation of momentum and energy.
• Science Toys When you are tired of studying and working, you can mix the ball and listen to the thunderous sound to lighten it.

Product description Specification: Condition: Brand New Material: glass + fishing line + plastic base Colour: as shown. Battery: 4 x AA batteries (not included) Size: approx. 12 x 9 x 12 cm/4.72 x 3.54 x 4.72 inches Package weight: about 145g Packing list: 1 x Luminous Pendulum Ball Toy Note: 1. Due to manual measurement, please allow 1-2cm error and sure you do not mind before ordering. 2. Due to the different placement of pictures, the colors may have chromatic aberration, please understand. Directions Insert battery and enjoy