Seiko Cal. 6687 - 728

This Solar model from 1981 features a 38mm Two-Tone case. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-393edb5a4874]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

Related Models

• Seiko 6358-395
• Seiko 5215-642
• Seiko 7127-242
• Seiko 6110-451
• Seiko 5611-281
• Seiko 6242-493
• Seiko 6346-717
• Seiko 0740-363
• Seiko 6322-808
• Seiko 6682-558
• Seiko 6657-527
• Seiko 6220-908