Seiko Cal. 0721 - 148

This Hand-Winding model from 1977 features a 37mm Two-Tone case. Powered by the 0721 caliber with 35j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-3023734c28bf]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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