subdermal LED bar necklace, (internal LED glow:1.7), (embedded LEDs:1.8) forming a sleek, horizontal line of glowing light beneath the skin across the collarbone, soft light radiating outward from the center, (horizontal glowing line:1.6) following the natural curve of the body, smooth light diffusion, (natural skin tone:1.5), high-definition, (ultra-realistic skin texture:1.8), seamless light transitions beneath the skin, (no visible jewelry:1.8), (worn necklace:-1.8), (chains:-1.8), radiant horizontal light band under the skin, minimalist yet modern, perfect for casual and formal wear