Main Features: 

1) Brand & Model: TimeR2 Timer-MJ 

2) Type: NFC Smart Ring 

3) Material: Pure titanium+ pure glaze+natural high-profiledragon-eye zircon 

4) Color: Black and white 

5) Size:
7# (inner diameter:54mm)
8# (inner diameter:57.1mm)
9# (inner diameter:60mm),
10# (inner diameter:62.8mm),
11# (inner diameter:66mm),