Seiko Cal. 5611 - 353

This Spring Drive model from 1979 features a 37mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-82210edf23a1]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1979

Related Models

• Seiko 7129-545
• Seiko 6179-591
• Seiko 4454-887
• Seiko 6691-671
• Seiko 6259-703
• Seiko 4553-236
• Seiko 6665-960
• Seiko 6275-994
• Seiko 6111-214
• Seiko 6692-780
• Seiko 7155-718
• Seiko 4418-445