It almost looked like a toy when I opened the box but it worked as soon as I pressed the ON button and I realized the motor was about 10 times more powerful than the previous three I tried and returned. Others were slightly larger, much harder to hold - for those old wrists - and sounded like they were on their last legs the whole time. mighty tick! All the computers that came with it seemed tiny too, but they worked great. I couldn't believe how long the battery lasted - straight out of the box - when I timed it in my canteen; it never slowed down and the engine sounded perfectly masterful the whole time. THANK YOU for this very nimble, calming and easy addition to my favorite tools! PS It's so easy to carry in the car, and it can also be plugged into the car so it can work all day if needed! (By the way, the ON button stays on, so you don't have to hold it down the whole time - YES!)