1. Stable constant pull function, power-on self-checking, automatic fault detection function;
2. Storage memory function, four groups of pounds can be arbitrarily set for storage;
3. Set up four sets of prestretching functions to reduce damage to the strings;
4. Memory function of pulling times and setting of three-speed pulling speed;
5. Knotting and pounds increasing setting, automatic reset after knotting and stringing;
6. Synchronous racket clamping system, six-point positioning, more uniform force on the racket;
7. Three-level setting function of button sound;
8. KG/LB conversion function.
