Seiko Cal. 5637 - 839

The 5637-839 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-83c10e92bbd3]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1988

Related Models

• Seiko 3869-941
• Seiko 7120-123
• Seiko 6195-749
• Seiko 6347-142
• Seiko 6352-159
• Seiko 7120-211
• Seiko 6311-263
• Seiko 6277-537
• Seiko 7088-127
• Seiko 4531-358
• Seiko 7132-537
• Seiko 7125-742