1 x Flywheel toy (2 x LR41， included) 1 x Strap (95cm) 2 x Round rings
Tie the strap with one ring， pull the strap through two holes of the flywheel and another ring; Before playing， shaking the flywheel by your hands， pull and loosen the strap as fast as you can， meanwhile， the flywheel will rotary fast and make sound effect.
Dimensions: 2.83 in x 2.83 in x 0.55 in (7.2 cm x 7.2 cm x 1.4 cm) Weight: 0.39 oz (11 g)