Seiko Cal. 5646 - 332

The Seiko 5646-332 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-66fee6b8a3a4]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

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