blue seed BBD TWS-L31 Bluetooth Headset V5.1, Earbud, Black Bluetooth  (Black, True Wireless)

headphones can be used 3. Light, comfortable to wear, free to adjust, not easy to fall off 4. 3.5-4 hours working time per charge for the earbuds, 5-6 times full charge by the charging case. 5. Comfort fit & wide compatibility. Different sized ear tips and in-camel cable-free design provide comfortable fit. Support Bluetooth-enabled devices with version 4.0 and above. 6. Exercise ready: Sweat-resistant with a secure fit that made to move with you. Specification: Packing list 2*Bluetooth Earphone 1*USB Charging Cable 1*Charging Case 1*User Manual