No batteries or electricity required. Great for chopping almonds, filberts, peanuts, pecans, walnuts, and other types of nuts. Easy to use. Simply place shelled nuts into the hopper lid and turn the handle. Chopped nuts are conveniently collected in the glass base. Sprinkle on baked goods, desserts, salads, making quick healthy snacks, and more. Sturdy and durable hand chopper. Hand wash in warm soapy water. Glass base is dishwasher safe.