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R20, smart ring with NFC access control, heart rate, blood oxygen💍

R20, smart ring with NFC access control, heart rate, blood oxygen, motion detection, health detection, automatic sleep monitoring, ceramic ring,

0
sales
$69.00
$52.00
69.00$
Size
Number
#7[Inner diameter 54.3mm]
#8[Inner diameter 56.9 mm]
#9[Inner diameter 59.5mm]
#10[Inner diameter 62.1 mm]
#11[Inner diameter 64.6 mm]
#12[Inner diameter 67.2 mm]
#13[Inner diameter 69.7 mm]
#14[Inner diameter 73.5mm]

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    already the first one

    already the last one