Features: Touch button night backlight, it is more convenient for night operation.  Support APE/FLAC and other lossless formats, support lyrics synchronization, background playing.  Support AMV/AVI video playing.  Hifi lossless sound quality, 5D sound.  TXT format e-book, memory reading.  Built-in dual PCM microphone to support long-distance recording.  Long battery life, charging for 1.5 hours, playing for 48 hours.  Support convenient folder classification.  The FM function can not only radio, but also record it and save it.  One button lock screen, simple and convenient.  Support OTG downloader (requires mobile phone to support OTG function).  Bluetooth CSR4.2, better wireless sound quality.     Specification: Name:Portable Bluetooth MP3 player;  Material:CNC metal one, double curved glass screen;  Built-in memory:8G/16G;  Resolution:128 x 160;  Bluetooth version:CSR™ 4.2;  Battery power:800mAh;  Frequency response:20Hz-20KHz;  Charging time:About 1.5 hours;  Play time:48 hours;  Reading time:78 hours;  Distortion:90db;  Size:8.5 x 4 x 0.7cm / 3.3 x 1.6 x 0.3inch;     Note: 64GB=32GB MP3 device memory +1Pcs 32GB memory card.  The color of the item may vary slightly due to photography and different PC monitor.  The size might be slightly errored due to manual measurement. Your kindly understanding would be appreciated.     Package Included: 1 x MP3 Player;  1 x Earphone;  1 x Cahrging Cable;  1 x User Manual