Seiko Cal. 3881 - 138

The 3881-138 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3881 caliber with 25j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-02306d46a130]

Also known as: Monster, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1965

Related Models

• Seiko 5277-712
• Seiko 6315-932
• Seiko 4517-103
• Seiko 0784-945
• Seiko 3847-834
• Seiko 7134-257
• Seiko 6328-176
• Seiko 5621-834
• Seiko 6649-539
• Seiko 4458-879
• Seiko 6662-455
• Seiko 0783-815