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The Samsung Galaxy Ring may get up to nine days of battery
That’s decent for the category.
When we got some hands-on time with Samsung’s Galaxy Ring earlier this week at Mobile World Congress, battery life was still a mystery. Android Authority also spotted a TechM report quoting Samsung Electronics chief Roh Tae-moon as saying the ring can be used for up to nine days. Some wearables take periodic readings to extend battery life; others sample continuously; and others yet give you the option to choose.
Or read this on The Verge