I am selling this because I thought it was wired when I bought it, but it turned out to be Bluetooth. It has been opened, but I have never used it. Wireless headset compatible with 360 Reality Audio, with a battery life of up to 50 hours. - Brand: SONY - Model: WH-CH520 - Color: White - Connection type: Wireless - Battery life: Up to 50 hours - Features: 360 Reality Audio compatible ⚠️ I have a dog. I store the item out of the dog's reach, but please refrain from purchasing if you have allergies. Also, I do not accept returns, exchanges, or complaints.