Seiko Cal. 7178 - 990

The Seiko 7178-990 represents an important milestone in Seiko's 1982 lineup. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-b40dbb168af7]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1982

Related Models

• Seiko 5644-203
• Seiko 7185-866
• Seiko 6645-653
• Seiko 6310-370
• Seiko 0725-866
• Seiko 4483-488
• Seiko 5640-427
• Seiko 5637-207
• Seiko 6112-596
• Seiko 4533-751
• Seiko 7164-128
• Seiko 6387-787