This is the Sennheiser flagship headphones, the "MOMENTUM 4 Wireless." It features a high-quality design, comfortable fit, and Sennheiser's signature natural and rich sound quality. It also supports noise canceling (ANC), ambient sound mode, and long battery life (up to 60 hours), making it ideal for commuting and travel. ・Operation confirmed (Bluetooth connection and playback OK) ・Initialized ・There are minor scratches from use, but it is in overall good condition. ・I purchased it on Amazon and used it a few times, but the headphones didn't suit me, so I started using earphones mainly and am now selling it. ・Main unit ・Dedicated case ・USB-C cable ・AUX cable ・Instruction manual / Outer box included ・Pairing and noise canceling function work without problems. ・Instant purchase OK, feel free to comment with any price negotiations.