R4 Smart Ring, Ceramic NFC Ring Scenario Notification Excellent Dispersion Performance Low Thermal Conductivity Wearable for IOS Phone

About this item

Upgrade Circuit Structure: The newly designed circuit structure significantly reduces the electric field interference between various modules, and increases the transmission distance by three times compared to the previous generation product, making it easily compatible with various card reading devices. | Ceramic Material: The R4 ring is made of microcrystalline ceramics, with excellent refractive index and dispersion performance, giving off a unique round luster overall. | Frequency Band: From 125KHz to 13.56MHz frequency band, the R4 ring can simulate encryption cards or cards with multiple format standards | NFC Modules: Through the two sets of NFC modules, it is possible to run its built in numerous characteristic cloud services separately. No need to install an app for direct use, and suitable for both for Android and for IOS platforms. | Power Supply: R4 is powered by the radio energy of the reading and writing device, which does not require charging, and there is no need to worry about battery life. It is a device that can accompany you day and night.

Specifications