The Black and Decker AS600 6-Volt Alkaline Battery Cordless Screwdriver is a useful tool to have around your home. My wife and I use this for simple household fixes that need to be made quickly and wit ease. The unit uses 4 AA batteries, and the batteries last quite a while. We got a full day's use of hanging pictures, screwing and unscrewing toys to fix with ease around the house. Despite the small, compact size this tool works with a lot of power. It is deceptively small. I use this tool for many household jobs that I was always searching for a handheld screwdriver for before-I found this cuts the time down to less than a third of the time it took before. I would recommend this tool for anyone looking for a small addition to their toolbox that makes work time less and much easier overall.