Seiko Cal. 3840 - 618

This Spring Drive model from 1968 features a 37mm Stainless Steel case. Powered by the 3840 caliber with 20j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-7df5ebcb7812]

Also known as: Navigator, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1968

Related Models

• Seiko 4520-385
• Seiko 6120-516
• Seiko 7082-647
• Seiko 4466-187
• Seiko 6357-939
• Seiko 6114-277
• Seiko 6367-211
• Seiko 5229-823
• Seiko 5677-320
• Seiko 7021-278
• Seiko 7118-177
• Seiko 7027-189