Seiko Cal. 6687 - 380

The 6687-380 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6687 caliber with 23j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-c814971d18d3]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1998

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