stethoscope 3d model

Create an ultra-realistic, premium 3D model of a modern medical stethoscope placed on a smooth matte dark surface. Design details: * Tubing: deep matte black rubber with soft reflections, slightly curved naturally * Chest piece: polished stainless steel with mirror-like finish, circular diaphragm with subtle engraved detailing * Binaural tubes: brushed metal with realistic joints and soft highlights * Ear tips: soft matte silicone, dark gray/black Lighting & environment: * Studio-grade cinematic lighting (soft key light + subtle rim light) * High contrast with elegant shadows * Slight reflection on surface (luxury product photography style) * Dark gradient background (charcoal to black) Material realism: * Use PBR materials (physically accurate reflections and roughness) * Micro-surface imperfections (very subtle scratches on metal) * Soft shadow falloff and ambient occlusion Camera & composition: * Close-up angled product shot (slightly top-down perspective) * Depth of field e