Seiko Cal. 6647 - 307

This Quartz model from 1978 features a 37mm Gold-Plated case. It features a Black dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-dedad2e93f12]

Also known as: Turtle, World Timer

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

Related Models

• Seiko 4467-151
• Seiko 0759-356
• Seiko 5647-685
• Seiko 6339-161
• Seiko 0724-892
• Seiko 7012-346
• Seiko 6191-619
• Seiko 6362-117
• Seiko 7080-127
• Seiko 7048-435
• Seiko 6360-619
• Seiko 3855-172