Seiko Cal. 4550 - 925

This Spring Drive model from 1973 features a 43mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-93ba1e9c0be2]

Also known as: Turtle, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1973

Related Models

• Seiko 7142-689
• Seiko 5224-236
• Seiko 3855-771
• Seiko 6299-406
• Seiko 5693-571
• Seiko 7062-439
• Seiko 0723-403
• Seiko 6654-221
• Seiko 3812-167
• Seiko 6379-734
• Seiko 6621-324
• Seiko 6652-364