Seiko Cal. 6657 - 101

Released in 1997, the Cal. 6657 with design code 101 was part of Seiko's domestic market collection. Powered by the 6657 caliber with 21j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-bc48b8085c40]

Also known as: UFO, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1997

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