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Nov 21, 2025, 7:30 am139 pts
EngadgetOura is hosting a Black Friday sale on many of its more popular smart rings. Perhaps the most notable deal is for the Oura Ring 4, which is down to $249. This is a discount of 29 percent, as it typically costs $349. The sale applies to the black colorway. The Ring 4 actually topped our list of the best smart…
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