Lenovo 510 Wireless Keyboard and Mouse

This is my first Amazon review, and I did use this keyboard a year first before posting the review for a holistic, time-tested experience. The mouse and keyboard are very durable and of excellent quality. I purchased in 6/14 and today is 7/8 — which means I have experienced 0 problems and a happy year of dependable, efficient usage.The keyboard is very energy efficient and uses 2 AAA batteries. It’s been a year now but I don’t think I’ve changed the battery yet in the keyboard yet.The mouse has gone through 2 battery replacements. But because I use computer for work, school, heavy coding, gaming, and artistic projects, it’s to be expected. The mouse also glows in a tiny orange light when it’s 5-7 days away from needing a replacement so you can know in advance and not face a sudden dead-battery incident. (I have gone through days of gaming with that little orange light and the mouse still works and delivers) It is pretty unbelievably good for the $30 I’ve paid on this set.SURVIVED COFFEE ATTACK from Cat Knockover.Cats, am I right? I work, take classes, and teach classes, at home and my feline buddies are a constant variable in my life. A week ago, one knock over my coffee ( Large size - Hot ) when I went on a 5min bathroom break. I came back fully expecting the keyboard not to work. But once I wiped it down, I’m very pleasantly surprised and relieved that I can still work. Half of the keyboard was completely soaked by sweet brown coffee but seems fine. . . ? I’ve gone a week since and there were no key failures. The quality endures!Some keys were sticky, like Crtl, Fn, Shift and so forth. I was planning to buy a new one but decided to try cleaning the sticky ones with some cotton balls, tissue, and rubbing alcohol. Works like a charm and now I DONT NEED TO Buy a new keyboard!Super good quality and it does survive liquid accidents. :) Take that, Cat!Buy this! I’m legit too happy, especially since it’s gone $2 cheaper than a year ago.