Digital display bluetooth headset $ 15.83 feature 1. Bluetooth V5.0, supports most Bluetooth devices and has low power consumption The 2,400mAh charging box can charge 2 earphones about 4 times, providing more than 24 hours of music 3. Adopt waterproof technology, no longer need to worry about water and sweat 4 x 13mm dual driver units, enjoy the super loud sound of 9D bass music Popular touch control function, support switching songs, call and assistant call voice.