Panasonic Technics EAH AZ100 - New Product Achieves high-quality sound by employing a magnetic fluid driver, a first in the industry. I am the second user, and I have stored it after using it about three times (as I often used other wireless earphones). The previous owner purchased it new in February 2025 at a major electronics retailer. It is fully functional, with no issues in operation or battery life. A wooden case is also included. *Contents are as shown in the images. *Retail price: 39,600 yen Other features: Noise canceling