The digital stealth takes 6 aa batteries that operate the whole unit(sensor and camera). I was amazed at how long they lasted. From post I read last year I thought they chewed up batteries but that has not been my experience. That may also have to do with the average temperature.

DeerT has a post going with some very nice pics he has taken with his digital stealth. For the price and the quality I've seen sofar I'm convinced this is the best buy on the market at this time.

http://forum.hunting.net/asppg/tm.asp?m=654959

Keep in mind that these pics were down sized to fit the 30kb limit. These pics are even better quality on a home computer at their original file size.