Features High Resolution Sound Quality Music Player This high resolution audio player has excellent sound quality with advanced DSD decoding technology to reduce distortion; the high resolution audio player captures the depth and breadth of each note. It is perfect for audiophiles to enjoy live music. (Warm reminder: the sound quality will be better with professional speakers or HiFi headphones.) HIGH RESOLUTION LOSSLESS AUDIO PLAYER The HIFI lossless MP3 player uses an advanced audio stereo DAC chip with a maximum sampling rate of 128-384 kHz/16-64 bit. [Long Playback Time and Expandable Large Memory With a built-in 1500mAh battery, you can enjoy up to 24 hours of uninterrupted high-resolution music at volume 30 and screen saver mode.Hi-Fi music player has a built-in capacity of 16GB, and you can also expand the storage space up to 128GB Micro SD card and enjoy the music library which is thousands of songs long. [Humanized Design] This digital music player features a 2.4-inch HD screen that is easy to navigate with the retro-designed scroll wheel. Control the main functions and volume intuitively with 1 finger. Line out and headphone out ports are flexible to use, including wired headphones or home audio systems, cars with auxiliary cables and amplifiers. Fashionable Craftsmanship The lossless music player is elegantly portable with a high-precision CNC aluminum alloy case. The unique scroll control wheel can quickly find menu files and is very responsive. The independent menu button and return button have a one-touch lock screen function, easy to operate. Specification Product Name: HiFi MP3 Player Product Model: HIFI-01 Operation mode: button + scroll wheel encoder Screen size: 2.4 inches Resolution: 240*320 Bluetooth version: 5.0 Memory capacity: 16GB built-in (self-contained) Memory Expansion: Maximum support 128GB TF card (not included) Audio format: MP3 WMA WAV APE FLAC ACC OGG DSD64 Recording format: MP3/WAV Image format: JPEG Charging time: 2 hours