B2 Headphones Bluetooth-compatible V5.1 Rechargeable Noise Cancelling Headset with Mircrophone Portable Calling Earphone

Full Product Description (From the manufacturer)

Adpots latest Bluetooth 5.0 technology to ensure the most stable connectivity, fast transmission without signal loss or music dropouts. Automatic system gives you a hassle-free experience when pairing and connecting to your device. Get 7-8 hour's playtime from a single charge (only 1H charge time) and 35 extra hours in the mini portable charging case. Not only work as personal use, also you can use a pair of earbuds with family, friends and lover to share your happy..syi