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.Specifications1. 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 ~ 3cmIC module type: UIDID module type: T5577NFC module type: Ntag213Ring material: CeramicsStandard US size8(57.1mm),9(60mm),10(62.8mm),11(66mm),12(70mm)Package list contain:1 x Smart Ring1 x Manual