1. Material: plastic + metal + electronic components 2. Power supply: 3 x AG10 button batteries 3. Comfortable handle, fine workmanship, delicate feel, smooth and burr-free 4. Gyro magnetic adsorption, close to the steel ring, do not worry about falling when rotating, play at will, play a variety of ways 5. LED color changing light, fling the gyro along the track rotation, turn to a certain speed will emit colorful light 6. Weight: about 72 g 7. Size: about 19.8 x 5 cm, gyro diameter of about 6.3 cm
