Doxa Sub 300

Swiss Watch Fair 1967 BF 43
This diver’s watch is specially designed for professional use. Case guaranteed to withstand a pressure of 30 atmospheres, screwed-in winding-crown and turning bezel with double graduation for calculating elapsed diving time and computing the security curve for surfacing without decompression stages. The bezel incorporates an irreversible notch system to prevent any accidental counter-turning liable to induce involuntary prolopgation of immersion. Oversized minute hand. Self-winding movement with calendar. (DOXA Sub 300)