機械式腕時計 · ダークラグジュアリー

Premium product photograph of a mechanical wristwatch with a see-through caseback showing intricate gears and a brown leather strap, on black velvet in low-key lighting with a single rim light tracing the edges. Clean composition with generous negative space, realistic materials and crisp detail, soft natural shadows. No text, no logos, no watermark. Vertical 4:5.