Seiko Cal. 0731 - 820

This Spring Drive model from 1982 features a 45mm Hardlex-Coated Steel case. Powered by the 0731 caliber with 27j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-af372f8e6aa5]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1982

Related Models

• Seiko 7022-322
• Seiko 0714-592
• Seiko 6282-507
• Seiko 0750-230
• Seiko 6169-878
• Seiko 7078-608
• Seiko 3862-873
• Seiko 6382-734
• Seiko 5678-703
• Seiko 7097-995
• Seiko 6132-481
• Seiko 5270-741