JAKCOM R4 is a multifunctional RFID finger ring, The built-in IC and ID modules can take the place of Access card, Parking card, Membership card, Shopping card and other RFID cards; The built-in NFC module can realize Virtual call, Scene notification, Business card sharing, Memo sharing and other featured cloud services. Specifications 1.Jakcom R4 is entirely made of micro-crystal Zr ceramics,calmly deal with all kinds of scratches. 2.Jakcom R4 carries with multiple sets of RFID chip modules.capable of simulating 4 contactless RFID cards. 3.Jakcom R4 is capable of operating different functions Or sharing different information on Android and IOS platforms Through two sets of NFC modules, e.g. Virtual call(Quickly trigger a real timed call) Scene notification(Quickly trigger multiple preset notifications) Memo sharing Business card sharing ect. RF distance:1 ~ 3cm IC module type: UID ID module type: T5577 NFC module type: Ntag213 Ring material: Ceramics Standard US size #8(57.1mm), #9(60mm), #10(62.8mm), #11(66mm), #12(70mm) Package list contain: 1 x Smart Ring 1 x Manual