Bluetooth-compatible Earphones Speaker unit: 8mm Speaker impedance: 160 Sensitivity: 93±3dB Speaker frequency response: 20HZ ~ 20KHZ Headphone power: 30 x 2ma Lifespan: 2.5 hours of talking and 2.5 hours of music eadphone charging time: 40 minutes Charging room power: 800 mA Charging time: 1h Specifications: Bluetooth V5.0, support most of bluetooth devices and lower power consumption , 800mAh charging case can full charge 2 earphones around 8 times, offer more 30Hours musci time With waterproof technology, no need to worry about water and sweat anymore , 10mms dual drive units, enjoy 9D strong deep bass music sound Popular touch control function, support switch songs, phone call and call voice assiatant. Package Included: Bluetooth-compatible Earphones charging line