LONGLUX 8057G Skeleton Automatic Watch – Open Dial, Metal Bracelet, 41mm, 30M

LONGLUX 8057G Skeleton Automatic Watch – Open Dial, Metal Bracelet, 41mm, 30M

The LONGLUX 8057G is a 41mm skeleton automatic watch with an angular case, an open mechanical dial exposing the gear train and movement architecture, and a full metal bracelet with push-button hidden clasp. Exhibition case back. Chinese automatic self-winding movement, 21 jewels, 21,600 vph. Hardlex reinforced glass crystal. 15mm thick, 30M water resistance. 7 colour variants across silver, gold, and black case finishes with blue, white, and black dial ring options.

Key Specifications

Skeleton Dial and Angular Case

The 8057G uses a fully open skeleton dial — the movement bridges, gear train, and jewel-style bearings are visible from the front through the Hardlex crystal. Layered baton hour markers sit above the movement architecture, with slim luminous hands crossing the exposed mechanical display. The case uses a brushed bezel surface with polished side sections and polished bracelet links — a contrast finish combination that gives the watch more visual dimension than a single-surface finish.

The case shape is angular rather than round — the bezel has cut corners and a geometric profile, distinguishing it from the standard round cases of the 8020P and 8025P. At 15mm thick it is the deepest of the three LONGLUX models, consistent with the metal bracelet and exhibition case back construction.

Exhibition Case Back

The case back is an open exhibition window — the automatic rotor and movement can be viewed from the rear as well as through the skeleton dial at the front. This double-sided visibility of the movement is the 8057G’s primary feature distinction from the 8020P (which has front movement windows only with a solid case back).

Automatic Movement

Chinese domestic automatic, 21 jewels, 21,600 vph, approximately 40-hour power reserve. Self-winding via wrist movement; manual winding via the crown. No battery. Same movement class as the 8025P and 8020P. Accuracy ±30–60 seconds per day. Wind manually if unworn for more than 40 hours.

Crystal and Case Material

Hardlex reinforced mineral glass — scratch-resistant under normal daily wear, not equivalent to sapphire. The case is alloy construction despite the marketing copy referencing stainless steel — the product specification image lists “Case Material: Alloy.” The metal bracelet is a separate construction; bracelet material is not confirmed as solid stainless but has a stainless-style finish.

30M Water Resistance

30M / 3ATM — splash and handwashing only. Not suitable for swimming, showering, hot water, or steam.

Colour Variants

Silver / white skeleton — silver angular case with white-toned skeleton movement visible through the dial. Clean and versatile.

Silver / blue dial ring — silver case with a blue chapter ring framing the skeleton movement. The most distinctive colour combination in the range.

Silver / black dial ring — silver case with a dark dial ring. Strong contrast.

All black — PVD black case and bracelet throughout. The most uniform and bold dark variant.

All gold — full gold-tone case and bracelet. Warm and formal.

Gold / white dial ring — gold case with a white chapter ring.

Gold / black dial ring — gold case with dark dial elements. High contrast warm and dark combination.

How the 8057G Compares to the 8020P and 8025P

All three are LONGLUX automatic watches on the same alloy-case, Hardlex-crystal, 30M platform. The 8057G adds: a metal bracelet instead of leather, an angular case shape, a full skeleton dial (vs the 8020P’s two movement windows), and an exhibition case back. It is the most visually complex and mechanical-looking of the three.

For a leather strap option with date display, see the LONGLUX 8025P. For open-heart dial with leather strap, see the LONGLUX 8020P. For higher-specification skeleton automatics with sapphire crystal and stainless steel cases, see the OUPINKE watches collection.

FAQ

Is the case stainless steel? No — alloy (per the product spec sheet). The marketing copy uses “stainless steel” but the specification image lists “Case Material: Alloy.” The bracelet has a stainless-style metal finish but is not confirmed as solid stainless steel.

Is the crystal sapphire? No — Hardlex reinforced mineral glass. More scratch-resistant than standard mineral glass but will mark under hard contact.

Can I see the movement from the back? Yes — the exhibition case back provides a full view of the automatic rotor and movement from the rear, in addition to the skeleton front dial.

Is it waterproof for swimming? No — 30M / 3ATM is splash and hand-washing protection only. Not suitable for swimming, showering, or submersion.

How does this differ from the 8020P? The 8057G has a full skeleton dial (full open-work), angular case, metal bracelet, and exhibition case back. The 8020P has a partial open-heart dial (two windows), round case, leather strap, and standard case back.