Seiko Cal. 3837 - 231

The 3837-231 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3837 caliber with 21j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-88757eaa6b7b]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

Related Models

• Seiko 5695-665
• Seiko 5228-564
• Seiko 7144-162
• Seiko 6331-602
• Seiko 6151-196
• Seiko 5241-282
• Seiko 6696-437
• Seiko 3872-540
• Seiko 5232-846
• Seiko 6693-534
• Seiko 3853-959
• Seiko 7173-685