Seiko Cal. 3841 - 178

This Spring Drive model from 1968 features a 45mm Hardlex-Coated Steel case. Powered by the 3841 caliber with 29j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-421da8c21093]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1968

Related Models

• Seiko 0752-599
• Seiko 6170-773
• Seiko 6657-493
• Seiko 3851-833
• Seiko 4476-248
• Seiko 5686-261
• Seiko 7062-130
• Seiko 0753-295
• Seiko 6389-846
• Seiko 7084-375
• Seiko 7128-516
• Seiko 5627-997