Seiko Cal. 7156 - 906

The Seiko 7156-906 represents an important milestone in Seiko's 1977 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-10fa4c458558]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

Related Models

• Seiko 5216-380
• Seiko 6639-829
• Seiko 7113-144
• Seiko 3830-676
• Seiko 4474-319
• Seiko 6654-583
• Seiko 6265-642
• Seiko 0774-865
• Seiko 4434-746
• Seiko 7086-651
• Seiko 6373-473
• Seiko 5669-703