Seiko Cal. 6387 - 816

The 6387-816 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6387 caliber with 36j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-4e558a3789d2]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1989

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