Innoteck Essentials electric salt & pepper mill set allows effortless single handed grinding at the touch of a button to season your dishes. Easily adjustable coarseness knob located underneath enabling a varied choice of super fine to coarse through the rust proof ceramic grinding mechanism. Built in LED light shows how much salt or pepper has been added to the food. This set is battery operated and easy to refill. Both grinders are made of durable stainless steel with a transparent casing so you can see how much ingredient is left.