Seiko Cal. 6138 - 728

Released in 1965, the Cal. 6138 with design code 728 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-560ea0b965ad]

Also known as: Rally, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1965

Related Models

• Seiko 3894-230
• Seiko 6685-844
• Seiko 4593-863
• Seiko 6649-797
• Seiko 6628-417
• Seiko 0733-420
• Seiko 6132-778
• Seiko 4443-637
• Seiko 6332-906
• Seiko 7094-105
• Seiko 3889-192
• Seiko 6647-759