Seiko Cal. 6121 - 383

The Seiko 6121-383 represents an important milestone in Seiko's 1988 lineup. Powered by the 6121 caliber with 31j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-de797caa0687]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1988

Related Models

• Seiko 0726-816
• Seiko 7194-692
• Seiko 3899-285
• Seiko 4576-963
• Seiko 6319-171
• Seiko 6343-417
• Seiko 0737-802
• Seiko 3861-716
• Seiko 5621-739
• Seiko 4462-749
• Seiko 3819-394
• Seiko 7092-285