Seiko Cal. 3851 - 556

The 3851-556 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3851 caliber with 31j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-ef2b060d91f7]

Also known as: Helmet, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1969

Related Models

• Seiko 5699-583
• Seiko 7065-216
• Seiko 6177-500
• Seiko 6327-515
• Seiko 7174-346
• Seiko 3856-896
• Seiko 3892-803
• Seiko 4510-914
• Seiko 6220-163
• Seiko 5236-936
• Seiko 3823-193
• Seiko 7032-249