After downloading the pictures to a computer, a dialog inquires if you wish to delete the pictures. One click clears the camera to begin again. If you are using a memory card, the manual recommends erasing it in the camera because the camera loses track of the number of pictures available when it is erased by the computer. The camera may be used with a power adapter or 4 AA batteries. The power adapter is an added accessory which is purchased separately.
Batteries seem to be practical for many applications.
Remember that the camera will need power during downloading to your computer as well as during the actual picture taking. However, the pictures can be downloaded to your computer through the serial port. Any Mac will do if you have the KodakEnhancer software on the computer. Even my black and white powerbook can store the pictures from the camera. 10 MB of space on your hard drive will store 70 pictures at best quality.