Seiko Cal. 6645 - 736

The Seiko 6645-736 represents an important milestone in Seiko's 1965 lineup. Powered by the 6645 caliber with 17j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-7e5c953031db]

Also known as: Shogun, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1965

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