Seiko Cal. 6378 - 236

Released in 1970, the Cal. 6378 with design code 236 was part of Seiko's domestic market collection. Powered by the 6378 caliber with 23j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-68f8bd7162ca]

Also known as: Monster, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1970

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