Seiko Cal. 6660 - 975

This Automatic model from 1977 features a 36mm Hardlex-Coated Steel case. Powered by the 6660 caliber with 30j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-5634b5930be8]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

Related Models

• Seiko 6238-699
• Seiko 4442-763
• Seiko 0783-284
• Seiko 6338-511
• Seiko 7159-216
• Seiko 6165-812
• Seiko 6685-909
• Seiko 4451-144
• Seiko 4525-735
• Seiko 6275-813
• Seiko 3825-420
• Seiko 7128-679