Seiko Cal. 5646 - 575

The 5646-575 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5646 caliber with 36j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-b952528f8d88]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1990

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