JAKCOM R4 Smart Ring Multifunctional Lord Of The Rings, Size: 57.1mm for Apple & Android(Number 8)

1. Size: 7x7x3cm2. Weight: 60g (including packaging)3. Wearing method: wrist strap4. Applicable system: iOS, Android5. Microcrystalline zirconium ceramic body, excellent refractive index and dispersion performance, so that the whole exudes a unique round and smooth6. Marathon craftsmanship, with nano characteristics of outer rigidity and inner flexibility7. Function: virtual incoming call, scene notification, NFC cloud service, handy notes, information sharing, waterproof and dustproof, no need to charge8. Carrier frequency: 13.56MHZ, 125KHZ9. RF distance: 1-3cm10. IC module type: UID11. ID module type: T557712. NFC module type: NTAG21313. Material: ceramic14. Working temperature: -50-80 degrees Celsius