Seiko Cal. 6616 - 456

The Seiko 6616-456 represents an important milestone in Seiko's 1981 lineup. It features a Silver dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-d4b13b2f0d25]

Also known as: Helmet, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1981

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