Seiko Cal. 6628 - 715

The 6628-715 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-fe8c2da2d1cb]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1971

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