Seiko Cal. 6687 - 738

This Solar model from 1979 features a 42mm Gold-Plated case. It features a Silver dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-97f6d82ecb6c]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1979

Related Models

• Seiko 4563-930
• Seiko 0738-357
• Seiko 6387-602
• Seiko 5699-878
• Seiko 6692-666
• Seiko 6350-442
• Seiko 5236-244
• Seiko 4493-713
• Seiko 6693-279
• Seiko 5682-956
• Seiko 4485-417
• Seiko 6120-638