Seiko Cal. 5644 - 138

This Automatic model from 1978 features a 46mm Stainless Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-f35d95df77e5]

Also known as: Shogun, Bellmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1978

Related Models

• Seiko 5681-935
• Seiko 7178-613
• Seiko 6623-624
• Seiko 6662-127
• Seiko 6165-775
• Seiko 5673-748
• Seiko 0758-341
• Seiko 5270-849
• Seiko 7043-574
• Seiko 5674-232
• Seiko 3857-551
• Seiko 4424-819