Cheap Waterproof Digital Smart Ring NFC for Android Mobile Phone

Application Age Group : Adult Function : NFC Product Descriptions: 100% Brand new and high quality ! Material: stainless steel Packing: individual packing Modeling: geometric Fit for Android Mobile Phone The smart ring is a fashionable and wearable electronic product which is able to connect with a smartphone through Near Field Communication (NFC) to complete function performing and data sharing. Designed with high-level water resistance, it can be used without any power supply. Embedded with NFC chip, it can only be connected to a smartphone with NFC function. Detailed operations: Place the smart ring within the NFC area of a smartphone to perform: screen unlocking, app lock unlocking, app quickly launching, name card and URL information sending and reading, etc. Instructions for use: 1. First, check if your smartphone has NFC function. It can usually be found in the system settings. If no relevant options are found, contact with the manufacturer post-sale support, or search on Google if the smartphone model has NFC function and confirm its NFC area. 2. If your smartphone has NFC function, turn on the NFC switch, search your app store for the software which apply NFC, download and install them. 3. Start the NFC APP, perform actions according to the instructions. 4. Since NFC is a near field communication technology, make sure to place the top side of the ring chip right close to the NFC area when reading any data to avoid the failure in reading and writing. Package included: 1 PC NFC Ring Size Table: Size6: Weeks Long 52 mm, Diameter 16.4 mm Size7: Weeks Long 54 mm, Diameter 17.3 mm Size8: Weeks Long 57 mm, Diameter 18.1 mm Size9: Weeks Long 59.5 mm, Diameter 18.9 mm Size10: Weeks Long 62 mm, Diameter 19.8 mm Size11: Weeks Long 64.5 mm, Diameter 20.6 mm Size12: Weeks Long 67.5 mm, Diameter 21.4 mm Size13: Weeks Long 68 mm, Diameter 22.5 mm Note: Product details might be tiny different due to different batches Please allow 1-3cm differences due to manual measurements. (1inch=2.54cm, 1cm=0.39inch) There are color differences due to different screens and lights

Specifications:, The smart ring through the nfc radio frequency communication technology, to achieve mobile phone function operation and sharing of

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