If it is for office use, it can be won within 200, and if there is a demand for e-sports games within 500, it is not impossible to group out.
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As an example, the wireless keyboard and mouse products of domestic Fuller, colorful, Leibo and other peripheral manufacturers are very reliable. You can go to Taobao to search peripheral manufacturers to find their flagship store, and find the wireless keyboard and mouse set in the category. Now their solutions are inexpensive and mature.
If the answer host has e-sports needs (want to play games, lol, pubg, csgo, etc.), it can also be arranged. For example, set up a Dalyu ek820 wireless keyboard and Logitech G304.
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G304 is currently one of the most acclaimed wireless mice, the specific use of feelings can see my history answer. The ek820 is a low axis wireless mechanical keyboard, recommended green axis. But this keyboard life is short, may be a few days to wash. But this ek820 is one of the most cost-effective mechanical keyboards in the 200 to 300 price range. Both the green button sound and the low shaft feel and the big key feel are absolutely top.