Seiko Cal. 5645 - 641

The 5645-641 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-693ee023915d]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1980

Related Models

• Seiko 0781-399
• Seiko 6176-308
• Seiko 5611-148
• Seiko 5662-834
• Seiko 0757-352
• Seiko 6364-180
• Seiko 0756-392
• Seiko 6251-493
• Seiko 6616-361
• Seiko 4481-825
• Seiko 5236-991
• Seiko 6390-448