Seiko Cal. 7057 - 721

Released in 1968, the Cal. 7057 with design code 721 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-80ff63b08b9d]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1968

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