Seiko Cal. 6616 - 353

The Seiko 6616-353 represents an important milestone in Seiko's 1975 lineup. Powered by the 6616 caliber with 25j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-0b5996162f49]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1975

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