Seiko Cal. 6649 - 231

Released in 1998, the Cal. 6649 with design code 231 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-e427ba2add4b]

Also known as: Sumo, UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1998

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