Seiko Cal. 5646 - 818

This Solar model from 1976 features a 40mm Titanium case. It features a Burgundy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-210b2fcb2af6]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1976

Related Models

• Seiko 6345-628
• Seiko 7116-270
• Seiko 6153-996
• Seiko 4597-489
• Seiko 6391-700
• Seiko 5612-659
• Seiko 6195-631
• Seiko 5283-351
• Seiko 3879-785
• Seiko 4546-457
• Seiko 4464-148
• Seiko 5245-309