Seiko Sports 100, Ref. 7A48-7000, Cal. 7A48, Men’s Chronograph Vintage Watch, 1985

A moonphase aperture at 12 joins the Roman-numeral silver-white dial of this Seiko Sports 100 watch from 1985, reference 7A48-7000. Slim black hands accompany three chronograph registers inside a 39 mm steel case with gold-plated accents. Quartz caliber 7A48 powers the display, while the original integrated bracelet combines brushed outer links with polished gold-tone centres.

Roman-numeral dial and moonphase at 12

The silver-white dial combines Roman hour markers with a detailed minute track. Three chronograph registers provide the timing readings, with a moonphase aperture at 12 adding a separate indication above the main hands.

The slim black baton hour and minute hands contrast with the pale surface. A long central chronograph seconds hand and minimal subsidiary hands complete the timing layout, leaving the Roman numerals and moonphase display visually distinct.

Steel case, polished gold-tone bezel and plated controls

The stainless steel case measures 39 mm in diameter and 41.5 mm from lug to lug. A polished gold-tone bezel contrasts with brushed side finishing, preserving the two-tone exterior. The original sports design includes water resistance; present water resistance is not established.

The original gold-plated crown sits at 8. Gold-plated chronograph pushers at 2 and 4 give precise tactile feedback, with their warm finish matching the accents around the dial.

Original brushed and gold-tone integrated links

The original integrated stainless steel bracelet has brushed outer links and polished gold-tone centre links. Its two finishes continue the case’s metal contrast, preserving a continuous line from the watch head through the bracelet to the clasp.

Quartz moonphase chronograph and nominal accuracy

This quartz watch uses Seiko caliber 7A48, a chronograph movement with an integrated moonphase complication. Its model specification is 15 jewels, with a nominal rated accuracy of ±15 seconds per month. The rating describes the caliber rather than a measured result for this example.

The chronograph’s moonphase, timing registers and central hands combine practical functions in an analog display. This battery-powered architecture supplies the timekeeping without regular winding, alongside the original two-tone sports-watch presentation.

This used watch is in excellent condition, fully serviced and fully operational, retaining all original components. A 12-month warranty is included, and worldwide shipping is available with professional, secure packaging.