SONY WH-1000XM4 Wireless Noise Canceling Headphones ■ Description ・ Purchased about 2-3 years ago, but I'm selling it because I don't use it much. ・ Operation confirmed. ・ Accessories are as shown in the photos. ■ Specifications ・ Brand: Sony ・ Model Number: WH-1000XM4 BM ・ Color: Black ・ Type: Wireless Noise Canceling Headphones (Over-Ear) ・ Noise Control: Active Noise Cancellation (ANC) ・ Frequency Response: Up to 40,000Hz ・ Driver Unit: 40mm ・ Material: Plastic ・ Usage: Music listening ・ Connection Method: Bluetooth / 3.5mm Stereo Mini Jack ・ Wireless Standard: Bluetooth ・ Cord Length: 1.2m ・ Cable Type: Detachable ・ Weight: 1.68 pounds (approx. 762g) ・ Supported Features: Android/iOS control, with microphone, lightweight design Sony Model Name: WH-1000XM4