Seiko Cal. 6166 - 550

The Seiko 6166-550 represents an important milestone in Seiko's 1974 lineup. Powered by the 6166 caliber with 27j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-1169fff444a6]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1974

Related Models

• Seiko 4470-571
• Seiko 4496-181
• Seiko 6380-700
• Seiko 3865-867
• Seiko 3846-465
• Seiko 4578-642
• Seiko 7028-595
• Seiko 0765-808
• Seiko 0762-459
• Seiko 5624-712
• Seiko 4426-591
• Seiko 6186-977