Seiko Cal. 6687 - 378

The 6687-378 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6687 caliber with 23j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-55706cce1134]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1991

Related Models

• Seiko 4456-111
• Seiko 5286-749
• Seiko 3853-839
• Seiko 4580-755
• Seiko 6626-767
• Seiko 6672-327
• Seiko 7029-663
• Seiko 6186-237
• Seiko 7128-312
• Seiko 6233-115
• Seiko 4447-659
• Seiko 4498-190