Seiko Cal. 6646 - 316

This Automatic model from 1969 features a 37mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-8b5783c2ef87]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1969

Related Models

• Seiko 5248-766
• Seiko 7144-567
• Seiko 7144-261
• Seiko 5697-794
• Seiko 6285-486
• Seiko 6384-452
• Seiko 4488-880
• Seiko 4436-242
• Seiko 4411-786
• Seiko 5639-367
• Seiko 4418-858
• Seiko 7039-561