Experience unparalleled sound quality with the Sony WH-1000XM4 wireless noise cancelling Bluetooth headphones in black. With a model number of WH1000XM4/B, this Sony headphone has an adjustable headband, ear-cup (over the ear) form factor, and built-in microphone. It is also foldable, closed back, and features noise cancellation for an immersive listening experience. This Sony WH-1000XM4 headphone is wireless and has Bluetooth connectivity. It has a piece count of 0 and is missing its manufacturer packaging. Measuring 9.330 inches in length, 3.070 inches in height, 7.130 inches in width, and weighing 1.6800 ounces, these headphones are perfect for on-the-go use. Purchase the top-of-the-line Sony WH-1000XM4 headphones without worrying about the condition as they are open box.