Model number: Sony MDR-XB950B1. Mint condition. Used only about five times. Only charged once. Battery lasts 17-20 hours.
Retails for $250. Price is as cheap as it's going to get. If you want it cheaper, I suggest buying new from Best Buy or Amazon.
https://www.bestbuy.ca/en-ca/product/sony-sony-on-ear-wireless-headphones-with-mic-mdrxb950b1-b-black-mdrxb950b1-b/10585774.aspx?
https://www.amazon.ca/Sony-MDRXB950B1-Extra-Wireless-Headphone/dp/B01N5UVZBP/ref=sr_1_1?ie=UTF8&qid=1526006396&sr=8-1&keywords=Sony+MDRXB950B1