Seiko Cal. 5636 - 631

Released in 1972, the Cal. 5636 with design code 631 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-041cffcb2ec3]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1972

Related Models

• Seiko 7137-511
• Seiko 6363-869
• Seiko 7116-162
• Seiko 4574-585
• Seiko 3868-115
• Seiko 7137-246
• Seiko 0791-939
• Seiko 6141-768
• Seiko 6293-324
• Seiko 4434-383
• Seiko 5662-193
• Seiko 6340-658