R4 Smart Ring Fashionable Multifunctional Waterproof Smart Ring for iPhone Samsung Size 12

Product condition: Newintroduction: R4 is a multifunctional RFID wireless radio frequency ring. The built-in IC and ID modules can be replaced with access cards, parking cards, membership cards, consumer cards and other radio frequency cards; the built-in NFC module can be used to implement virtual calls, location notifications, and special cloud services, such as business card sharing and memo sharing. Description： Cobalt frequency: 13.56MHz 125KHz RF distance: 1-3cm IC module type: UID ID module type: T5577 NFC module type: Ntag213 Main material: ceramic Waterproof rating: IP68 Features [Update Health Materials] The health index of the R4 ring has been comprehensively improved. It is made of microcrystalline zirconium ceramics, mixed with germanium sand, volcanic magnets and FIR energy stones, which greatly contributes to the health of the wearer. Crystal ceramics contain trace elements, which can improve human metabolism and effectively promote blood circulation; FIR Energy Stone ca