Seiko Cal. 6642 - 816

The Seiko 6642-816 represents an important milestone in Seiko's 1994 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-f2dc3291d6ad]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1994

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