? 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