Seiko Cal. 4436 - 636

This Hand-Winding model from 1976 features a 37mm Two-Tone case. Powered by the 4436 caliber with 20j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-37b45b3a347e]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1976

Related Models

• Seiko 5686-248
• Seiko 5269-443
• Seiko 6127-745
• Seiko 5672-118
• Seiko 5285-446
• Seiko 5271-588
• Seiko 0730-163
• Seiko 5287-490
• Seiko 6355-900
• Seiko 0747-296
• Seiko 6315-679
• Seiko 5244-888