Specifications: Power Supply:Built-in 3.7V/800mAH battery;  Charging Specification:5V/1A;  Card Support:support up to 128G TF/Micro SD card;  Output Power:250mW(32Q load);     Support Format: DSD:DSD64-DSD128(DFF, DSF);  APE:16-24bit/44.1-96khz;  FLAC:16-24bit/44.1-192khz;  WAV:16-24bit/44.1-192khz;  AIFF:16-24bit/44.1-192khz;  WMA, MP3, AAC，OGG;  Frequency Response:20Hz~20KHz(±0.5dB);  Gain:+6dB;  THD+N:0.003% (1KHz);  S/N:108dB;  Adaptation headphone impedance:16Ω～300Ω;  Battery Life:> 10H;  Charging time:<2H;  Size:6.3*4.0*1.5cm;  Weight:50g;     Features: X2S Hi-Res Lossless Portable Music Player.  Aluminum shell, compact body.  Mastering sound quality 4K picture quality music experience.  Support a variety of music formats .  Create a dozens dollars level, HIFI player.  The player supports the common DFF、DSF、DSD、 APE、FLAC、ALAC、WAV、 AIFF、 ACC、MP3、WMA formats, Maximum support PCM 24Bit/192K, DSD128 HD lossless music.  6-band dynamic adjustment with a gain control range of +/-12dB, allowing you to fine-tune each music frequency band, alleviating the lack of earphone frequency response and making music more suitable for your listening preferences.  Supports up to 128G TF/Micro SD card, It can store more than 3,000 WAV or 6,000 FLAC/APE lossless songs, calculated as 4 minutes for a single song, 24,000 minutes without repeating any, enjoy the wonderful feeling of the music.  The buffer amplifier circuit adopts the rail-to-rail amplifier chip, which has a strong driver, which can easily drive many kinds of HIFI headphones and release unlimited music.  Adopt 0.96 inch OLED screen, small size, low power consumption, high contrast.     Package Included:   1 x  X2S MP3 Player