18 MM - BLACK RUBBER
How to change your strap:https://youtu.be/4GR7saLNqkE Tropic Bracelet - Special Nautic-ski Tropic - Bracelet specially adapted to underwater activities, this rubber bracelet resists water and salt or chlorine attacks. Manufactured for the Nautic Ski model in 1967, Lip reissued it in 2014. Strap compatible with the models below Nautic ski Panoramic...