It is a toy with 2 x AA batteries (not included in the product); Hold the handle to pass the circle. If the two metals knocked together and produce a sound， it means you failed; Can practice your balance; Great for adults and kids playing together.
Dimensions: 11.42 in x 9.84 in x 1.89 in (29.0 cm x 25.0 cm x 4.8 cm) Weight: 6.91 oz (196 g)