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

1. Size: 7x7x3cm 2. Weight: 60g (including packaging) 3. Wearing method: wrist strap 4. Applicable system: iOS, Android 5. Microcrystalline zirconium ceramic body, excellent refractive index and dispersion performance, so that the whole exudes a unique round and smooth 6. Marathon craftsmanship, with nano characteristics of outer rigidity and inner flexibility 7. Function: virtual incoming call, scene notification, NFC cloud service, handy notes, information sharing, waterproof and dustproof, no need to charge 8. Carrier frequency: 13.56MHZ, 125KHZ 9. RF distance: 1-3cm 10. IC module type: UID 11. ID module type: T5577 12. NFC module type: NTAG213 13. Material: ceramic 14. Working temperature: -50-80 degrees Celsius