Seiko Cal. 3881 - 738

This Hand-Winding model from 1966 features a 40mm Stainless Steel case. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-d072de67fdcb]

Also known as: Sumo, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

Related Models

• Seiko 6151-219
• Seiko 6150-471
• Seiko 6145-237
• Seiko 4561-560
• Seiko 5259-927
• Seiko 6326-676
• Seiko 3859-353
• Seiko 5241-440
• Seiko 0765-243
• Seiko 5637-922
• Seiko 3850-699
• Seiko 6173-586