Needed a 10 key keyboard for software development and as we work from home our company's laptops didn't come with a 10 key -Keyboard layout supplied. Although I've spent almost 1.5 years learning to adapt without a 10 key, from the start I wanted to have one when working from home. Definitely recommend to anyone looking for a 10 key button as bluetooth works without any issues. Automatic shutdown after 3 seconds of inactivity saves battery life, which is powered by 2 AA. Auto-resume is pretty responsive too.