• AB:1532: • Master-slave control Version5.0,IPX5 • Touch operation systemEarbuds • Charging base 400mAh • Earbuds each 50mAh • Non-stop playing time:4-5 Hours • Speaker Φ6mm 16Ω • Sensitivity(SPK)95±3dB@1KHz • USB: type-c data cable • Earbuds size: 22.5*17.5*24.0mm • Charing box size:63.0*27.0*34.5.0mm