Seiko Cal. 6366 - 228

The 6366-228 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6366 caliber with 22j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-e03beb1aec07]

Also known as: UFO, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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