Seiko Cal. 4520 - 103

This Quartz model from 1972 features a 45mm Two-Tone case. Powered by the 4520 caliber with 30j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-2fab81b742b9]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1972

Related Models

• Seiko 3872-143
• Seiko 5284-226
• Seiko 6330-655
• Seiko 5626-732
• Seiko 4590-735
• Seiko 3812-592
• Seiko 6243-608
• Seiko 6338-742
• Seiko 7060-668
• Seiko 3840-698
• Seiko 7037-324
• Seiko 7178-418