Seiko Cal. 3821 - 123

This Hand-Winding model from 1968 features a 40mm PVD Black case. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-330223ca278d]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1968

Related Models

• Seiko 6117-475
• Seiko 5212-575
• Seiko 0797-674
• Seiko 6394-545
• Seiko 6124-440
• Seiko 3831-911
• Seiko 7199-743
• Seiko 4558-695
• Seiko 4415-433
• Seiko 7037-351
• Seiko 6679-374
• Seiko 3869-815