5mm and a scratch-resistant sapphire crystal with an anti-reflective coating

The SUB 300 naturally features the famous unidirectional rotating bezel

be it for scuba pioneers such as Captain Jacques Cousteau and his team aboard the Calypso (who praised the patented no-decompression dive bezel introduced with the first SUB models)

even for the most ambitious diver as to the depths to explore

it was the first to feature a unidirectional bezel with a dual scale for depth and dive time to calculate a safe ascent without decompression stops

Aged steel folding clasp with racheting wetsuit extension color_yellow 5mm and a scratch-resistant sapphireAged stainless steel folding clasp with racheting wetsuit extension, only for rubber strap