Act as a senior product designer with 10+ years of experience in wearable tech. Create a detailed MidJourney prompt to visualize a sleek, modern smart lapel pin with hidden voice recording capabilities. The design should incorporate [premium materials like brushed titanium or carbon fiber], a [discreet LED indicator for recording status], and a [USB-C charging port hidden beneath the pin clasp]. Include subtle tech elements while maintaining an elegant, professional appearance suitable for [business executives or journalists]. Show the pin in 3-4 realistic use-case scenarios: attached to a suit lapel, charging on a desk, and a close-up of its minimalist interface. Use a color palette of [navy blue, silver, and matte black] for a sophisticated look.