Ultrahuman Ring AIR Bluetooth Smart Ring Matt Grey - 10

Smart Ring sizes are unique, and different from standard UK ring sizes. We strongly recommend that before you buy an Ultrahuman Air Smart Ring, that you buy an Ultrahuman sizing kit so you can be sure that the size ring you choose will be comfortable and give you the best tracking information. You can find the kit using the search option or typing the 4076638 into the search bar. Theyre available to be ordered to collect from all Argos collection points at your convenience. The kit costs £10, but there ... - Manufacturers part number: 395532