Seiko Cal. 5635 - 904

Released in 1983, the Cal. 5635 with design code 904 was part of Seiko's domestic market collection. Powered by the 5635 caliber with 20j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-c934daf9ed63]

Also known as: Monster, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1983

Related Models

• Seiko 7126-526
• Seiko 6225-687
• Seiko 3838-329
• Seiko 6317-701
• Seiko 6238-249
• Seiko 6635-464
• Seiko 6227-604
• Seiko 6393-979
• Seiko 6277-155
• Seiko 6112-995
• Seiko 6627-144
• Seiko 6314-239