1. Digital design operation panel, accurate electronic counting, adjustable speed, easy to operate 2. Equipped with infrared positioning module to help the center positioning, fast and accurate 3. Anti-beater safety bracelet, if the finger is accidentally punched in the hole, the machine will automatically stop the alarm, making the operation safer 4. Suitable for various buttons 5. A plurality of refueling holes are provided to facilitate refueling and prevent dry grinding of the machine