This 44mm automatic dive watch is a pre-owned Seiko Marine Master 300, Reference 6159-7001. It features an improved hi-beat movement ticking 10 times per second and can withstand 300m of water pressure thanks to its unique screw-down crystal gasket.

• Condition: Fair
• Case Material: stainless steel
• Case Size: 44mm diameter
• Lug Width: 19mm

A rare 1969 Seiko hi-beat diver with a monocoque case and 300m water resistance, featuring a Grand Seiko 36,000 bph movement.

• Condition: Pre-owned with scratches and wear consistent with a tool watch
• Movement: Grand Seiko 36,000 bph
• Water Resistance: 300m
• Crystal: NOS OE Seiko Crystal

This is a rare Seiko hi-beat diver from July 1969, featuring a monocoque case, 300m water resistance, and a Grand Seiko 36,000 bph movement. It has been freshly serviced and comes with a new strap and crystal.

• Condition: Pre-owned with scratches and wear consistent with a tool watch
• Movement: Grand Seiko 36,000 bph
• Case material: monocoque case
• Water resistance: 300m

This 1969 Seiko Professional Diver 300m Hi-Beat is a rare and beautiful timepiece with a matte black dial, sharp stainless steel case, and high-quality silicone waffle strap.

• Condition: Excellent, recently serviced
• Case Size: 43mm
• Movement Calibre: Cal. 6159
• Depth Rating: 300m

A fantastic Seiko 6159-7001 with a beautiful hi-beat movement, serviced in September 2024. The dial and hands are in great condition, original lume, but there are some minor marks on the edge of the dial at 4 o'clock.

• Condition: Excellent (minor scratches and dings on case)
• Case material: Stainless steel
• Diameter: 44mm (excluding crown)
• Thickness: 14mm