Stax Spirit S3, 80 hours for music play and a short 10-minute charge giving 11 hours of playtime, Hi-Res certified audio with cleaner sound, greater resolution, and better imaging, as same as true professional recording powered by a proprietary audio system, Most advanced Microprocessing system, making telephone communication like face-to-face communication, Enable a variety of advanced functionality-customized EQ settings, control settings, cushion sets, etc, The lightest weighted over-ear planer headphones for all-day use, and an additional set cooling-mesh ear-cushion for on-the-go or traveling use, , Bluetooth version: V5.2, Audio codecs: Qualcomm(R) aptX(TM) Adaptive, , Qualcomm(R) aptX(TM) HD, Qualcomm(R) aptX(TM), SBC, Driver unit: 89mm*70mm Planar Magnetic Driver, Playtime: 80hrs, Charging time: 1.5 hours, Charging port: USB-TypeC, Battery capacity: 1500mAh, Input: 5V/1.5A, Mircophones: 1, Microphone Type / Size: MEMS / 3.50X2.65X0.98mm, Microphone Sensitivity: -37dBFS±1dBFS, Frequency response: 10Hz~40KHz, Sound pressure level: 94±3dB SPL (A), Impedance: 24Ω, Weight: 329g, Dimension (L x W x H mm): 208x110x255mm