Bluetooth 5.3 compatible high-resolution audio wireless earphones with charging case. Unopened. I received these when I traveled to Turkey to use the audio guide on my smartphone at tourist sites, but I didn't use them. (I believe the cost was included in the entrance fee.) - Brand: RACA TECH - Product Name: True Wireless Headphones - Model: BK040 - Connectivity: Wireless - High-Resolution Audio: Supported - Bluetooth Version: 5.3 - Country of Manufacture: China - Package Contents: Earphones, Charging Case Thank you for looking.