Seiko Cal. 6628 - 537

The 6628-537 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6628 caliber with 18j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-43ba6826185b]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1988

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