Seiko Cal. 5647 - 740

The 5647-740 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8aef578bebad]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1981

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