Seiko Cal. 5637 - 774

The Seiko 5637-774 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-217f14705f76]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1968

Related Models

• Seiko 7057-775
• Seiko 6281-990
• Seiko 4433-605
• Seiko 6188-873
• Seiko 0767-118
• Seiko 6263-989
• Seiko 7030-371
• Seiko 7177-722
• Seiko 5265-513
• Seiko 6686-199
• Seiko 7041-874
• Seiko 6344-433