Seiko Cal. 3812 - 616

The 3812-616 is a sought-after Solar piece from Seiko's golden era. Powered by the 3812 caliber with 21j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-78e45a116344]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1977

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