Coffee grinders WH-8900 1. Approval: GS, ROHS, LFGB, CE & ... lid safety switch D.soft fingertip on/off switchE.grinds coffee beans nuts & spices F.power: 220V-240V, ... very hard products(for instance rice)*Fill the coffee grinder with coffee beans one the next basis:1 measuring ... to stard coffee beans grinding.*Release ON/OFF button (4) to stop grinding . GS, ROHS, LFGB, CE, EMC electric coffee grinders