Amazon is offering a pair of Funcl AI True Wireless Bluetooth Headphones for $39.50 when you apply code JZZF3A34 during checkout. Typically they cost double that price, and the customer reviews are overall positive.
These handy little headphones can be used separately or as a pair. They feature mild noise cancellation and a built-in microphone so you can take calls, too. They pair automatically once taken out of their charging capsule. The capsule itself takes just over an hour to fully charge, and the headphones have a 24-hour battery life. Finally, they're IPX5 water-resistant and backed by a one-year warranty.