Seiko Cal. 3851 - 539

This Hand-Winding model from 1972 features a 39mm Gold-Plated case. With its 19mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-25b3f66f399e]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1972

Related Models

• Seiko 6343-433
• Seiko 4575-993
• Seiko 6662-388
• Seiko 6267-363
• Seiko 7199-304
• Seiko 7071-945
• Seiko 5690-623
• Seiko 4446-978
• Seiko 5647-692
• Seiko 4482-453
• Seiko 7148-374
• Seiko 5639-130