Seiko Cal. 3860 - 510

The 3860-510 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-dd4e2ac85dda]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1975

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