Seiko Cal. 3816 - 131

The 3816-131 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3816 caliber with 29j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-b918cc216cfd]

Also known as: Sumo, Goldfeather

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1998

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