Seiko Cal. 6688 - 237

The Seiko 6688-237 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-e746578bc976]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1969

Related Models

• Seiko 6392-116
• Seiko 4413-824
• Seiko 4558-992
• Seiko 4444-502
• Seiko 6339-590
• Seiko 6122-965
• Seiko 6286-406
• Seiko 4581-803
• Seiko 6313-893
• Seiko 4455-735
• Seiko 6698-825
• Seiko 0743-690