Seiko Cal. 5645 - 716

The 5645-716 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5645 caliber with 21j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-70b80c332977]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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