Single-ended, balanced, line-out via 3.5mm and 4.4mm ports. balanced power up to 1040mW+1040mW@16Ω and 564mW+564mW@32Ω Battery lasts up to 11 hours balanced / 18 hours SE Frequency response: 20 Hz - 80 kHz Operating system: Android 8.1 Processors: Snapdragon 425, A53 quad-core Processor frequency: 1.4 DAC: CS43198 x 2 Wi -Fi: yes BT: 4.2 USB: 2.0 Screen diagonal: 4.0 Screen type: IPS, multi-touch Screen resolution: 540 x 1080 RAM: 2 GB ROM: 16 GB Card type: MicroSD (max. 2512 GB) Connectors: 3.5 mm, 4.5mm, USB Dimensions: 107.7 x 61.2 x 15.6 mm Colors: black / silver / gold Battery capacity: 3500 mAh Charging time: 2 hours