Description:Simple and stylish metal texture, smooth lines and unique shapes, every place has an elegant style.It is a decompression toy, you can lightly toggle to release pressure when you in a leisure time.Made of ABS plastic and metal material, it is safe, durable and slight to carry.Its height is 25cm, width is 22cm, base diameter is 10.5cm.It is suitable for office, bedroom, living room, cloakroom and entrance.Item Name: Perpetual InstrumentMaterial:ABS,MetalBattery Model: 4 x AA Batteries (Not Included)Size:25cmx22cmx10.5cm/9.84inx8.66inx4.13inNotes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.The product needs to prepare 4 AA batteries, and please do not use high-energy batteries.Just flip the top ball, perpetual motion device can always swing.Package Includes:1 X Perpetual Instrument