Broken edge refers to how long the gyro can turn.

Five minutes. Fingertip gyroscope is a small toy with a central symmetrical structure, which can idle on fingers. It can rotate for 5 minutes and is made with special tools. Broken blade refers to a new type of gyro that can rotate in a plane. It takes a bi-directional or multi-directional symmetrical body as the main body and a bearing is embedded in the middle of the main body. The basic principle of this object is similar to that of a traditional gyro.