Cat Mate Automatic Cat Feeder is designed to feed your pet at its normal meal times when you are away. Dry cat food is kept fresh in five easy-to-clean compartments revealed by a rotating lid and refrigerated by twin icepacks. Note that it will only keep canned food fresh for only one to two days due to the melting of the ice-packs. Just set the battery operated timer to the required mealtimes, up to 96 hours later. Minimum time between feedings is 4 hours. The required 'AA'-size battery is not included. Shipping weight: 5 lbs