Alotm R3 Smart Ring Waterproof Dust-proof Fall-proof for NFC…
Specifications: Size: standard US size 7, size 8, size9, size10, size11, size12 Weight: 0.11 lbs Technology: NFC Material: pure titanium Input/Output: NFC Waterproof grade: IP68 Property: waterproof, shockproof and dustproof Carrier frequency: 13.5MHZ Secret Protection: This Smart Ring can be the KEY of your phone even your house door(13.56mhz frequency door Lock). No need to…