Seiko Cal. 4416 - 643

The Seiko 4416-643 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-3adc8fb37e2a]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1987

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