Selling a Hansshow Tesla Smart ring key. Uses the RFID chip from a Tesla key card and pairs like any other key. Only used to test for functionality and it worked great, just wrong size. gloss black ceramic size 12 $100 (Seattle area)
This seems like it should be a no-brainer, but do you know if these rings are waterproof? The only time I can ever see using it is if I leave my phone and wallet in the car to go swimming.