Seiko Cal. 7121 - 939

The Seiko 7121-939 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-0cc22b959b18]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1983

Related Models

• Seiko 3830-742
• Seiko 6380-176
• Seiko 3882-807
• Seiko 5236-446
• Seiko 0742-765
• Seiko 0745-476
• Seiko 5226-755
• Seiko 0715-993
• Seiko 5685-353
• Seiko 0773-633
• Seiko 6241-264
• Seiko 5268-684