Seiko Cal. 3821 - 926

Released in 1972, the Cal. 3821 with design code 926 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-89aa96c9a6b5]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1972

Related Models

• Seiko 6633-407
• Seiko 7055-495
• Seiko 6671-296
• Seiko 0734-400
• Seiko 5270-607
• Seiko 3898-678
• Seiko 5278-301
• Seiko 4420-486
• Seiko 7190-921
• Seiko 6378-864
• Seiko 5682-592
• Seiko 6685-491