Longlux 8020 Review — A $20 Open Heart Automatic Watch

The Longlux 8020 is an automatic dress-style watch that sits firmly in the ultra-budget segment. At around $20, expectations naturally shift toward basic construction and decorative styling rather than long-term durability. Still, the watch attempts to present a more upscale look through a domed crystal, gold-tone finishing, and a dual open-heart dial layout. It doesn’t aim for refinement in the traditional sense, but instead focuses on delivering a visually busy, showpiece design at the lowest possible price. You may way want to compare this Longlux with other sub $50 watches we reviewed.

Longlux 8020 Open Heart Automatic

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Design & Case

The 8020 is large for a dress watch, measuring 42.6 mm in diameter, 14.4 mm thick, and 49.7 mm lug-to-lug, with a 21 mm lug width that tapers to 19 mm at the clasp. The case is made from zinc alloy, not stainless steel, which keeps weight down to 116 g on the full bracelet. Alloy softens edges and limits crispness in the finishing, but visually it still presents as polished steel from a distance.

The case profile stacks multiple layers: a polished midcase spanning lug to lug, the visible lip of the exhibition caseback beneath, and a gold-tone fixed bezel above. The transitions are more rounded than sharp, yet there is enough shaping for light to catch on the lines. A 5.9 mm push-pull crown in matching gold sits cleanly at 3 o’clock and is easy to operate.

Downward-angled lugs and inverted end links allow the watch to sit properly even on slimmer wrists. On a 6.5-inch wrist, the watch avoids overhang despite its diameter.

Bracelet & Clasp

While the case is alloy, the bracelet is stainless steel. Its five-link appearance is actually a three-link construction, with the central silver link flanked by two narrow gold strips. The outer links are silver-tone. Push pins hold everything together — expected for the price — and the links feel light, suggesting hollow construction.

The clasp is a butterfly style, simple in execution but visually tidy when closed. There’s no micro-adjustment and no safety lock, but the symmetry suits the dress-watch orientation.

Crystal & Dial

A slightly domed mineral crystal sits above the gold bezel. It produces mild distortion at sharper viewing angles and will show marks over time, but it contributes to the watch’s layered, dress-leaning presentation.

The black dial is where the 8020 places most of its visual effort. The matte surface is ringed by a printed minute track and 3D triangular gold-tone hour markers, which stand out more than typical flat indices at this price. At 12, 3, and 6 o’clock, small crystal stones add further decorative emphasis.

Between the markers, the dial features a radial guilloché-style pattern, more of a stamped texture than true machining. Two open-heart windows cut into the dial — the upper revealing the balance wheel with “21 Jewels” printed beside it, the lower exposing part of the gear train. Branding appears at 12 in gold.

Lume

Lume is minimal. Only the hour and minute hands and the arrow tip of the seconds hand receive luminous paint. It charges quickly and fades quickly — enough for short-term visibility but clearly not designed as a feature of emphasis.

Movement & Caseback

The movement is a Chinese Pearl automatic, a common entry-level caliber found in older Pagani Design and Benyar models. It runs at 21,600 bph, carries 21 jewels, and offers roughly a 40-hour power reserve. It is a basic, functional mechanism suitable for casual everyday wear, though not intended for high accuracy or longevity.

The exhibition caseback, framed in stainless steel, offers a view of the rotor and plates through a mineral window. Decoration is minimal, but the open-heart dial already exposes the most visually active parts of the movement.

Summary

The Longlux 8020 delivers a surprising amount of visual complexity for its price: a domed crystal, dual open-heart layout, gold-tone detailing, and a stainless-steel bracelet. At the same time, the alloy case, basic finishing, minimal lume, and entry-level movement place it clearly in the ultra-budget category.
It succeeds best as a low-cost novelty piece — a watch aimed at appearance and mechanical curiosity rather than durability or refinement. For buyers who simply want an inexpensive automatic with decorative styling, the 8020 offers exactly that. For anything beyond casual or occasional wear, its limitations become quickly apparent.

Specifications Table

Longlux 8020 Open Heart Automatic

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