Safety & Use Notes: Maximum continuous operation: 90 seconds; after every 90 seconds of operation, allow a cooling interval of 2 minutes; after five consecutive operating cycles (total 450 seconds), the grinder should rest for 60 minutes to allow the motor to cool completely. Unique Split Design for Easy Cleaning The nut grinder to bring you a more convenient using experience, we specially designed a split structure. Whether it is installation or disassembly, it can be completed quickly, and the operation is more flexible. In particular, the detachable blade design is easy to clean and can keep the blade clean and hygienic to avoid cross-contamination. After each use, you can easily clean it to keep the grinder as always new, providing comprehensive protection for your health. Large Capacity Design, Grind More Ingredients at Once - 600ml large capacity herb grinder can accommodate more ingredients.