Seiko Cal. 6633 - 376

This Solar model from 1968 features a 40mm Titanium case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-508614da6bcb]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1968

Related Models

• Seiko 4522-228
• Seiko 5638-581
• Seiko 6294-305
• Seiko 4534-434
• Seiko 4596-211
• Seiko 5635-144
• Seiko 5236-459
• Seiko 6372-468
• Seiko 5697-351
• Seiko 4416-385
• Seiko 7060-992
• Seiko 3810-205