R4 Smart ring NFC Electronics Mobile IOS Android Smartphone wearable magic Smart ring Specification parameters: Carrier frequency: 13.56MHz, 125kHz RF distance: 1 ~ 3cm IC module type: UID ID module type: T5577 NFC module type: Ntag213 Ring material: Ceramics Protection grade: IP68 Operating temperature range: -50-80 Wearing schematic diagram Triangular engraved surface is outward. Module description: IC card module: It is equivalent to a repeatable read-write IC card and supports the stimulation of M1 (Mifare1) IC cards of 13.56MHz. ID card module: It is equivalent to a repeatable read-write ID card and supports the stimulation of ID cards of 125kHz. Multi-function APP(note:only support NFC-enabled phone,And android or Windows phone system) 1.Private Note: 2.Mobile phone lock: 3.Quick start: 4.Share information: 5.ETC.. Other Features: No need battery charging Waterproof dust-proof and fall-proof contain: 1 X Smart Ring 1 X Manual