Seiko Cal. 0747 - 311

The 0747-311 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0747 caliber with 17j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-1c7814ae674d]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1971

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