Regarding the battery used in an ultra-narrow smart ring, it typically employs a compact and efficient rechargeable battery. These batteries are designed to provide sufficient power to support the functionalities of the smart ring while maintaining its slim profile.
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ChargeCard by AquaVault is a credit card size phone & smart device charger that fits in your wallet. It has built in charging cables & works with Apple & Android phones. ChargeCard is engineered with ultra-fast charging technology and designed to go wherever your adventures lead you.
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