The Zayka FlipMill is a gravity-activated spice grinder. Simply flip it over to activate, no buttons required! Featuring an adjustable ceramic grinding mechanism. We use ceramic blades for their resistance to dulling, ability to provide a very fine grind, and health benefits. On top of its unprecedented usability, the FlipMill features an elegant curve design which is sure to improve any kitchen decor. A clear window will show you how many pepper corns are left before the need for a refill. Uses 4 AA batteries for improved battery life.