Seiko Cal. 7057 - 556

The Seiko 7057-556 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-a9b7a2fa2049]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1997

Related Models

• Seiko 7026-338
• Seiko 0761-112
• Seiko 7144-244
• Seiko 4580-798
• Seiko 4524-710
• Seiko 7090-941
• Seiko 7025-301
• Seiko 0788-267
• Seiko 0739-627
• Seiko 4541-260
• Seiko 7092-812
• Seiko 3846-358