Seiko Cal. 4428 - 277

The 4428-277 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4428 caliber with 23j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-1eb520f148c4]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1974

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