[Advanced ANC Technology]Featuring Active Noise Cancellation (ANC) with a depth of -43dB, these headphones precisely calculate and intelligently cancel environmental noise for an immersive listening experience. [Premium Sound Quality]Equipped with 40mm titanium-plated dynamic drivers, enjoy HIFI-level audio with rich, layered, and dynamic stereo sound. [Stylish Design]Embracing a neutral color palette with premium materials and curved aesthetics, these headphones transform simplicity into a sexy, tech-savvy design language. [Exceptional Battery Life]With up to 55 hours of playtime on a single charge, these headphones ensure long-lasting entertainment. When the battery is depleted, use the included audio cable for continued high-resolution audio enjoyment. [Dual Device Connectivity]Connect to two devices simultaneously, allowing for seamless switching between audio sources. [Clear Call Quality]Enhanced with ENC (Environmental Noise Cancellation) technology for crystal-clear voice communication during calls. [Ergonomic Comfort]Featuring an adjustable, retractable design to fit various head sizes comfortably for extended wear. Specifications: Bluetooth-compatible Version: 5.4 Transmission Range: 10 meters Material: ABS Battery: 3.7V, 500mAh Playtime: Up to 55 hours Speaker Size: Φ40mm Charging Time: Approximately 3 hours