Seiko Cal. 5638 - 275

This Quartz model from 1970 features a 43mm Stainless Steel case. Powered by the 5638 caliber with 24j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-c03e722f5abb]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1970

Related Models

• Seiko 6362-204
• Seiko 5213-118
• Seiko 3883-664
• Seiko 7046-817
• Seiko 6660-184
• Seiko 4570-866
• Seiko 6289-365
• Seiko 6387-159
• Seiko 7134-199
• Seiko 5679-146
• Seiko 0713-275
• Seiko 0722-823