Seiko Cal. 6687 - 902

Released in 1969, the Cal. 6687 with design code 902 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-b0714e0b78b0]

Also known as: Silverwave, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1969

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