r3f smart bracelet intelligent wearable ring pole controller mobile phone accessories, Silver

notice: r3 function 1: health protection function, prevent electromagnetic wave radiation, regulate the body. fashion jewelry, couple rings. function 2 (with nfc mobile phone support): mobile phone unlock, information sharing, business cards, etc. feature 3: ic/id/nfc chip simulation, can copy the card(entrance guard card, access card, meal card, elevator card, attendance card)do not support the bus card, subway card and bank card. tip: apple's mobile phone no nfc function, so only apply