The Moondrop Ultrasonic wireless over-ear headphones combine advanced active noise cancellation technology with high-quality audio playback for an immersive listening experience. The closed over-ear design provides effective passive noise isolation and long-lasting comfort through memory foam ear cushions with a protein leather cover. With Bluetooth 5.3 and support for AAC, aptX, and LDAC codecs, these headphones enable high-resolution wireless audio transmission. The built-in rechargeable battery delivers up to 30 hours of uninterrupted playback with active noise cancellation or up to 40 hours in standard mode. The fast charging feature offers 3 hours of use after just 15 minutes of charging. The foldable design with a carrying case enhances portability for travel and everyday use. Integrated controls allow for easy operation of playback, volume, and noise cancellation modes without accessing the paired device. The detachable 3.5 mm audio cable provides wired listening options when needed. Voice assistant compatibility allows for hands-free operation with popular virtual assistants. The headphones maintain a stable wireless connection within a 10-meter range and support multipoint connectivity for simultaneous pairing with two devices. Constructed from durable materials, these headphones meet the demands of discerning listeners seeking reliable wireless audio performance with effective noise reduction. The precise frequency reproduction across the entire audible spectrum ensures high-quality sound fidelity for professional and personal audio applications.