Seiko Cal. 0721 - 438

The Seiko 0721-438 represents an important milestone in Seiko's 1965 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-6b2623ba240f]

Also known as: Monster, Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1965

Related Models

• Seiko 3882-403
• Seiko 4474-819
• Seiko 6150-162
• Seiko 6630-715
• Seiko 5225-458
• Seiko 7080-140
• Seiko 7130-586
• Seiko 7072-439
• Seiko 6613-708
• Seiko 4539-337
• Seiko 4527-453
• Seiko 0739-795