Feature: 1. With a luminous design, this pendulum balls can change the color of the ball itself when opened 2. A cool tabletop toy, which can always be in swing, you can put it on your desk or home table or shelf 3. Use these swinging spheres to demonstrate the conservation of momentum and energy. Can let children learn knowledge while playing 4. Made of good ABS glass, the unique luminous design concept impresses people, which can well meet your needs 5. As a sports toy, which can relax and release stress. The toy is also an ideal friends, family and yourself How to Use: 1. Install 4 batteries 2. Turn on the switch to turn on the light Specification: Item Type: Desktop Ornaments Hitting Beads Material: Abs+Glass Product Size: Approx. 15 x 11.3 x 14.8cm / 5.9 x 4.4 x 5.8in (manual measurement, there may be slight errors) Battery Model: 4 x AA Batteries (delivered without batteries) Package List: 1 x Newtons Cradle Note: 1.Manual Measurement, There May Be Slight Errors 2.Delivered Without Batteries
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