Seiko Cal. 5644 - 602

The 5644-602 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-cf22caff7ff8]

Also known as: Monster, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1982

Related Models

• Seiko 6288-111
• Seiko 4586-769
• Seiko 6172-300
• Seiko 3880-849
• Seiko 6365-228
• Seiko 5640-466
• Seiko 6250-611
• Seiko 5639-731
• Seiko 7074-886
• Seiko 6171-652
• Seiko 5621-618
• Seiko 4585-483