Seiko Cal. 6645 - 538

The Seiko 6645-538 represents an important milestone in Seiko's 1994 lineup. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-6248c7a8c530]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1994

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