The FD-9 Charm Shadow Black TWS earbuds deliver premium audio performance with -35dB hybrid active noise cancellation, 4 high-sensitivity microphones for crystal-clear calls, and a 10mm triple-layer titanium diaphragm driver for immersive sound. Powered by a new Bluetooth 5.4 chip, they offer ultra-low latency for gaming and seamless switching between music and gaming modes. With 48-hour total battery life (including case), ERS acoustic tuning for enhanced bass and vocal clarity, AAC/SBC and Hi-Fi audio decoding, and ergonomic human-engineered fit, these earbuds ensure comfort during extended wear. Fully compatible with smartphones, tablets, and laptops, they support APP smart connection for customizable EQ and firmware updates. Ideal for daily commuting, work-from-home setups, mobile gaming, and immersive music listening—designed for modern users who demand both performance and style in a sleek black finish.