Dish opens as pet approaches! Stainless steel dish has a built-in motion detector that senses when pets approach or walk away, which activates the lid. Durable cover automatically opens and closes without touching! Food and water stay fresh; bugs and dirt stay out. Easy-to-clean bowl removes to wash. For small dogs and cats. 5-1/2" diam; holds 8 oz. Uses 4 AA batteries (not incl.).