Seiko Cal. 6657 - 777

Released in 1998, the Cal. 6657 with design code 777 was part of Seiko's domestic market collection. It features a Cream dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-4ee64da0f868]

Also known as: Sumo, Shogun

Specifications

Movement

Solar

Case Material

Titanium

Case Width

35mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1998

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