There is a silicone insert and it cannot be used on threads

Citizen Men's Only Time Watch From the Of Collection Collection

With their 394 expertly crafted facets

Case diameter (mm) 21

Go for a refined style with this shiny clip with long prongs

Orologio Solo Tempo Super Titanio Donna Citizen Eco Dri ACCIAIO There is a silicone insertCitizen Lady Collection. Lady Super Titanium 6150. Time only function. Movement Light charged Eco Drive with 240 day power reserve. Characteristics Super Titanium case and bracelet. WR 5 bar. Dimensions Case diameter 34 mm Further details Part number FE6151 82A Eco Drive Super Titanium WR 5 bar technology Time only function Movement type Eco Drive Case material Titanium Super Titanium case finish Mineral glass Strap type Bracelet Metal Strap material