Act as a senior product designer with 10+ years of experience in wearable technology. Create a detailed Midjourney prompt to visualize a [LUXURY/SPORTY/MINIMALIST] smart brooch featuring a discreet emergency button. The brooch should have a [ROUND/SQUARE/GEOMETRIC] shape measuring [25-40mm] in diameter, made from [TITANIUM/STERLING SILVER/CERAMIC] with [ENAMEL/WOOD/PEARL] accents. The emergency button should be subtly integrated into the design - perhaps hidden under a [ROTATING/PRESS-TO-RELEASE/SLIDING] mechanism. Include [BIOMETRIC/HEART RATE/FALL DETECTION] sensors while maintaining an elegant aesthetic suitable for [FORMAL WEAR/CASUAL OUTFITS/ACTIVEWEAR]. Show the brooch being worn on a [LAPEL/SCARF/HANDBAG] with soft lighting highlighting its premium materials and tech features. The design should balance fashion and function, appearing both stylish and purposeful.