hidizs ap60 ii hi res music player, bluetooth mp3 player portable lossless hi-fi digital audio player support aptx/flac/dsd/aac with sd card slot (black) hidizs dimensions:75mm x 42mm x 14mm<br> weight: about 50g<br> screen: 320 x 240 2.0inch hd tft<br> dsd: software decoding 64,128<br> usb dac/otg dac: support<br> support apt-x lossless transmission<br> support bluetooth 4.0 versions<br> cpu: x1000<br> dac chip: ak4452vn<br> headphone amp: max97220a<br> gain: hight/low gain setting available<br> sample rate: 44.1khz-192khz/24 bit<br> supported formats: flac, ape, wma, wav, alac, aac, ogg, mp3, aiff, dsf, diff<br> headphone output: standard 3.5mm port<br> output power: 35mw@32 ohm<br> output impedance: 0.1 ohm<br> frequency response: 20hz to 20khz(-0.5db)<br> thd: 0.005%<br> snr: >109db<br> dynamic range: >105db<br> channel separation: 106db<br> internal memory: none <br> storage expansion: support 265gb<br> power port: micro usb2.0<br> battery: 1000mah 3.7v<br> play time: about 10 to 12 hours<br> support systerm: mac osx10.7, windows xp, windows 7/8/10.<br>