4 D size batteries (not included)and optional AC Adapter (sold separately). Equipped with air escape holes for easier trash bag removal, and Retainer Ring to keep trash bag in place and out of sightControl Odors - 1 Activated Carbon Odor Filter is included. Filter absorbs & neutralizes odors the natural way. For a fresh & clean smelling homeExtra-Long Battery Life - Only draws power as needed. 3X battery life of other sensor cans. 4 D size batteries (not included) can last up to 1.5 years2 Power Options - Powered by batteries (not included), or optional AC Adapter (sold separately, see other product variation) for battery-free powerFunctional Stainless Steel - Germ-resistant, fingerprint-proof surface is easy to clean. Modern design is perfect for any kitchen or office décorSpace + Money Saver - Efficient rectangular shape fits in tight spaces and corners. Fits common 13 Gal trash bags, no expensive custom bags requiredLarge Capacity - Efficient design requires no inner bucket, providing 25% more capacity than similar cans. Extra-Wide 12