1、Long Battery Life: Built in lithium ion polymer 450mAh battery for MP3 MP4 player. Playback time is up to 30 hours and can be fully charged in 2 to 3 hours via USB charging cable to meet your usage needs. 2、Large Memory Capacity: This MP3 MP4 music player has built in 8GB memory capacity, which can store up to 2000 music tracks and supports up to 64GB Micro Storage Card (not included). 3、Lightweight And Portable: The music player is designed with palm size and light weight, easy to put in your wallet and pocket. Easy to carry, especially when you are exercising, running, jogging, traveling and hiking. 4、Easy To Use: MP3 player is designed with classic buttons and easy navigation. Downloading is easy, just drag and drop music files or folders directly while connected to your computer. Fits perfectly into your car via the AUX port. 5、Support Formats: Lossless sound quality, supports MP3, WMA, OGG, WAV, APE, FLAC, AAC LC, ACELP formats (APE and Flac requirements: 8KHz‑48KHz, 1000Kbgs), no direct support for Audiobook and for iTunes.