Key Features and SpecsAudio Quality: Features 7mm dynamic "TrueResponse" transducers, delivering Sennheiser's signature sound with high-resolution support.Noise Cancellation: Adaptive Noise Cancellation (ANC) automatically adjusts to the environment, with an integrated anti-wind mode.Design & Fit: Smaller, more compact, and rectangular housing than the previous generation, including customizable ear fins for improved, secure fit.Battery Life: Up to 7 hours of playtime in the earbuds, with an additional 21 hours provided by the Qi-compatible charging case.Connectivity: Bluetooth 5.2, supporting AAC, SBC, and aptX Adaptive codecs. Includes multipoint connection support.Durability: IPX4-rated for splash resistance during exercise or travel.