Product Description
"Please take off the phone case before linking, The smart ring is a fashionable and wearable electronic Be able to connect to a mobile phone The chip is ntag213 chip, which can be set to open the smart door lock, recharge all-in-one card, unlock the smart phone, lock the important files of the mobile phone, and transfer files with one key By touching the NFC signal area of the mobile phone, the smart ring can unlock the screen, lock the application program, quickly start the application, send and read the business card and website information. Standard US size 7, size 8, size9, size10, size11, size12 No need to charge and waterproof. Never to worry about your cellphone is out of grid, out of battery, or donu2019t have access to your cellphone. "
