Seiko Cal. 6647 - 285

Released in 1975, the Cal. 6647 with design code 285 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-11ea3538fbe8]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1975

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