Jeanoko R4 Smart Ring, Low Thermal Conductivity Wearable Waterproof Ceramic NFC Ring for iOS Phone Accessories Ceramic Ring for Men Women Replace Key Card Key Fob(Size 9)

PREMIUM CERAMIC MATERIAL: Immerse yourself in the luxury of microcrystalline ceramics that form the foundation of the R4 ring. Boasting an exceptional refractive index and dispersion performance, this ring emits a unique round luster, adding a touch of sophistication to your style. NANO TECHNOLOGY AT YOUR FINGERTIPS: Experience the blend of external rigidity and internal flexibility, thanks to the nano characteristics of the R4 ring. The low thermal conductivity of microcrystalline gives it a warm and jade-like touch, ensuring comfort and style hand in hand. REVOLUTIONIZED CIRCUIT STRUCTURE: Stay ahead of the curve with the upgraded circuit structure of the R4 ring. This innovation significly reduces electric field interference between modules, boosting transmission dnce by three times compared to its predecessor. Connect effortlessly with various card reading devices for a seamless experience. VERSATILE FREQUENCY BAND: The R4 ring operates across the 125KHz to 13.56MHz frequency band, allowing it to simulate encryption cards or cards with multiple format standards. Experience unparalleled compatibility with a range of devices, making it the go-to choice for tech enthusiasts. SMART NFC MODULES: Unlock a world of possibilities with the two sets of NFC modules embedded in the R4 ring. Seamlessly run numerous characteristic cloud services without the need for additional apps. Whether you’re an Android or iOS user, this ring is designed to enhance your digital lifestyle. Popular products Popular products Popular products Popular products Product information Package Dimensions 2.76 x 2.76 x 0.79 inches Item Weight 1.48 ounces ASIN B0CGBW91PQ Best Sellers Rank #818,097 in Electronics (See Top 100 in Electronics) #1,962 in Smart Rings Date First Available August 22, 2023 Manufacturer Jeanoko Warranty & Support Product Warranty: For warranty information about this product, please click here Feedback Would you like to tell us about a lower price?