Since the size of a Lynx smart ring differs from standard jewelry ring sizes, please purchase a sizing kit to find your perfect size and then purchase the Lynx health smart ring. The sizing kit includes 8 ring sizers (sizes 6-13) and a quick-start guide for this measuing tool to help measure your ring size more accurately. | Renpho | | Smart Ring Health Tracker, Sleep Activity Monitor Long Battery No Subscription Titanium, Size 8-11, Size Before You Buy | Black-Size 9 | 2025) | Black Size 9 | Best Buy
| Color | Black Size 9 |
| Gtin | 840191406362 |
| Mpn | R-MZW01 |
| Age Group | Adult |
| Condition | New |
| Gender | Unisex |