Seiko Cal. 4510 - 646

The 4510-646 is a sought-after Solar piece from Seiko's golden era. Powered by the 4510 caliber with 20j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-04f94c8663d9]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1998

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