Seiko Cal. 6338 - 687

The 6338-687 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6338 caliber with 21j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-916ea14b2717]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1985

Related Models

• Seiko 0743-765
• Seiko 6351-987
• Seiko 5284-662
• Seiko 5631-330
• Seiko 5659-870
• Seiko 6665-623
• Seiko 4419-869
• Seiko 6293-385
• Seiko 6392-427
• Seiko 6156-907
• Seiko 4585-556
• Seiko 6247-991