Seiko Cal. 5644 - 784

The Seiko 5644-784 represents an important milestone in Seiko's 1987 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-2362dc4b35e6]

Also known as: Silverwave, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1987

Related Models

• Seiko 5249-679
• Seiko 3876-618
• Seiko 7037-428
• Seiko 0762-965
• Seiko 5613-405
• Seiko 7034-202
• Seiko 7088-616
• Seiko 4443-435
• Seiko 4586-148
• Seiko 4417-983
• Seiko 6250-911
• Seiko 7175-105