The B39 Foldable B.T (Bluetooth) Headset is a wireless over-ear Bluetooth headphone with a foldable design for easy carrying. It’s typically a generic/third-party brand rather than a major audio company model. 

 

📌 Key Features

• Bluetooth 5.0 wireless connectivity — connects to phones, tablets, and laptops with relatively stable signal within about 10 m (no obstacles). 
• Foldable & adjustable headband — collapses to save space, travel-friendly.