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There are much better options
Reviewed in Canada on January 13, 2021
I have been a big fan of Logitech products. As you can see I am presently using 4 of their keyboard and mouse combos at the same time. However I cannot recommend the Logitech Cordless Desktop MK335 Keyboard and Mouse Combo. Here are the specific reasons. A number of reviewers already mentioned there is a scratchy sound from the scrolling wheel on the mouse. It's definitely there and it is not subtle, it is loud enough to hear it from 3 feet away. More importantly the scratchy sound also translate to rolling resistance, it does not smoothly scroll, there is perceptible resistance. When you are scrolling up and down a short web page, this resistance is not a problem however I often work with several million rows of SQL data table and this slight resistance is causing a lot of pain in the wrist. None of the other three Logitech mice I own, which ranges from much more expensive to a lot cheaper price suffer from this problem.
However, the bigger problem lies with what other reviewers have mentioned. The keyboard intermittently stop working. Reading various forum and reviews, this problem may be associated with aggressive battery saving mode to meet the advertised 2 year battery life, however I think this is a hypothesis not proven causation. I have found some work around, if you turn off and turn on the switch in the back of the keyboard, it will start working again. I had tested the hypothesis of aggressive battery saving mode, by going into the operating system power saving mode and resetting it to high performance mode (always on, never sleep) and in the advanced setting disabled the USB selective suspend setting. Then intermittent stops I have experienced completely disappeared. I would NOT RECOMMEND applying these settings to work around keyboard problem as such actions may increase your hydro bill, shorten the life of the computer (laptop battery) and stress other peripheral devices. Even the much cheaper MK270 do not have these problems.