I’ve been using this power driver for about 2 months. It has 12 bits, integrated into the shank, that are easily interchangeable by sliding in and out, sort of like a revolver handgun. There is a little magnified window that lights up to help you choose the right bit. A thumb selector slides the bit into place and you’re ready to go. It’s even possible to remove and replace any bit if you want to, and I have already replaced some of the bits with magnetized ones.
The manufacturer claims that the lithium battery will hold its charge for a year, sitting in the drawer, so it is always ready to go. And when you do need to recharge it, you don’t need to worry about keeping track of a special charger as it uses a mini-usb plug and can charge off of any charger that can use that. You can even plug it into your laptop or computer and charge it with a regular USB cable.
It is lightweight and portable with all of the bits safely contained within so it’s like having a toolbox in one small package. I’m thinking about buying a second one to keep handy in the glove box of my car.