Seiko Cal. 6645 - 855

The 6645-855 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-9e11b09f99d6]

Also known as: UFO, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1970

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