Seiko Cal. 5646 - 436

This Automatic model from 1968 features a 37mm Two-Tone case. It features a Green dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-ea7eca3a2827]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1968

Related Models

• Seiko 6148-558
• Seiko 6330-464
• Seiko 5237-179
• Seiko 6147-821
• Seiko 6674-457
• Seiko 4410-939
• Seiko 6322-806
• Seiko 0729-608
• Seiko 6164-344
• Seiko 6240-100
• Seiko 7019-663
• Seiko 5286-452