Koss BT539i Wireless Headphones, Dark Grey & White
A wireless set of comfortable over ear headphones with a decent 12 hour battery life. Koss have been making Headphones for decades and have stayed around because their gear is much loved certainly by Carlton Audio Visual staff anyway.
On a side note I was amused to read that little Koss Headphone company was caught up in the Reddit wallstreetbets fiasco that saw Reddit users rally to Koss stocks and greatly inflate its stock price. This was because people in offices on Wall Street were betting that Koss was going to lose money. Instead Koss made a huge amount of money (albeit not because of the inherent value of the company going up). Koss will keep making Headphones we all enjoy and people in the Koss family made a rather large amount of money inadvertently!
Read more about the Koss story and the BT539i here. Official Koss website

Koss BT539i Wireless Headphones, Dark Grey & White
The Koss BT539i Wireless Bluetooth® Over-Ear Headphones feature state of the art Bluetooth® hardware and software. Listeners can stay connected with up to 12+ hours of battery life, built-in microphone and on-board controls for taking calls and controlling music.
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We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 30 days of delivery.