Omega Seamaster Strap Guide: Rubber, Steel, Leather & Fabric
Rubber, steel, leather or fabric for your Omega Seamaster Diver 300M, Planet Ocean or Aqua Terra — the 20–22mm sizing and how to fit and care for each.
Omega
Omega Speedmaster Strap Guide: Leather, Steel, NATO & Rubber
Leather, steel, NATO fabric or rubber for your Omega Speedmaster — the 20mm sizing, the space-programme history, and how to fit and care for each.
Omega Replacement Straps: The Complete Guide to Seamaster, Speedmaster & Aqua Terra Bands
Updated October 2026 · By the BGStraps team Quick answer: most Omega watches take a 20mm or 21mm strap. The Speedmaster Professional and the 42mm Seamaster Diver 300M take 20mm, while the 43.5mm Planet Ocean…