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Roborock S4 Max review: an efficient robot vacuum with a great app and really good suction | ZDNET
Roborock Announces The S4 Max, A Dedicated Robot Vacuum
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Roborock S4 Robotic Vacuum review - The Gadgeteer
Roborock S4 Max Robot Vacuum Review - Make Tech Easier
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Roborock S4 in US: where to buy, price, opinions...
Roborock S4 vacuum robot for $319.99 from Amazon
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