I was looking for a wireless mouse keyboard combination and was initially uncertain because there are no reviews for the MK 270 was while there were 260 lots of praise for nearly the same price predecessor MK. Nevertheless ordered and no regrets. The installation work easy, simply plug USB -Empfängerteil in the PC, turn on the mouse and keyboard and you're able. The receiver works with me in USB hub, so "consumed" no USB slot on the PC. For battery life I can not say anything, after all, have a mouse and keyboard on / off switch. Everything seems high, so perfect for the casual user.