Metals Type : Stainless steelGender : MenMaterial : ResinStyle : TRENDYRings Type : Wedding BandsShape\pattern : GeometricSurface Width : 8mmCompatibility : All CompatibleModel Number : JWR341Setting Type : NoneFine or Fashion : FashionOccasion : PartyItem Type : RingsFeature 1 : Smart door lockFeature 2 : No need to chargingFeature 3 : file transferFeature 4 : Store informationFeature 5 : Fashion JewelryFeature 6 : Hot RingsFeature 7 : Men's fine jewelryFeature 8 : Man ringFeature 9 : Smart ringFeature 10 : NFCFeature 11 : High Quality nfc ringFeature 12 : Cheap smart ringFeature 13 : China smart finger ring Suppliers"About use : Only supports phones with nfc functionnote 1 : Only support Android phones with NFCnote 2 : Will not use, please do not buySupport model : Android, iphonesupport system1 : iPhone xs and above models (systems in ios13 and above).support system2 : Android phone with NFC functiondescription:The ring only supports Android phones with nfc sensors and phones with iPhone XR and above.NFC model: NTAG213, only supports storage function.Before leaving the warehouse, we will send the package after passing the test. Since customers who don’t know how to use it usually score low, the phone does not have NFC and should not be purchased. Will not use, please do not buy. Disputes about product quality issues are not accepted.When using your smartphone alone, quickly lock and unlock your smartphone or tablet and hide appsShare and transfer information (Send private messages/photos/business cards/website links to the people you want to share in a simple way)Control application (you can pre-write a fixed list of processes, and then click "start application".Waterproof, no need to rechargeSupports Android and iPhone xs and above models that support NFC (ios13 and above systems). Size chart check imageQuickly start the mobile phone APP, pre-write the quick launcher start command into the smart ring, and the smart ring will automatically find and start the program when it touches the phone.Multifunctional NFC smart ring, the main function is to store and exchange personal information, as well as unlock mobile phone content and personal privacy encryption ptieProduct specifications:Material: Stainless steelSize: 6.7.8.9, 10, 11, 12, 13 Chip: NFC chipWorking frequency band: 13.56MHZProduct specifications:Product description: This smart ring is a fashionable wearable electronic product, which is connected to a mobile phone through NFC radio frequency communication technology to operate and share data. It does not require any power source and has a high level or waterproof performance. The built-in NFC chip requires the NFC function that comes with the phone.two.Specific operations: The smart ring unlocks the screen by touching the NFC signal area of the phone; locks the application; quickly starts the application; sends and reads business cards, website information, etc.Three instructions for use:(1) First check whether the mobile phone has NFC function. Usually, the NFC switch of the mobile phone is located in the system settings of the mobile phone. If the user cannot find the NFC function of the mobile phone, please contact the mobile phone manufacturer or Baidu to search for a mobile phone model that supports NFC. And confirm the NFC signal area or mobile phone.(2) If the mobile phone has NFC function, after turning on the NFC switch, search for NFC function software in the application software market, download and install, and operate according to the instructions on the software.(3) Open the downloaded NFC software and follow the software prompts.(4) As NFC belongs to near field communication, when reading any task, please make sure that the position of the ring piece is close to the NFC signal area of the mobile phone, otherwise the reading and writing may be normal. Then according to the mobile phone APP, carry out the function operation setting, matching, and establish the shortcut function application.(5) Support NFC function smart fingerprint password lock, NFC smart attendance, need to match, write tag information or digital synchronization can be used.Package Included:1 * Smart ringPrecaution:Due to the differences between different monitors, the image may not reflect the actual color of the item.Compare the detail size with the detail size. For manual measurement, the tolerance is 1-3 cm.If there is a problem with the product, please leave a message before providing error feedback.