A. Product Features 1. **Extended Battery Life**: The MP3/MP4 player is equipped with a 450mAh lithium-ion polymer battery. It can offer up to 30 hours of playback time and can be fully charged in 2 - 3 hours via the USB charging cable, meeting users' usage needs. 2. **Large Storage Capacity**: This MP3/MP4 music player comes with an 8GB built-in memory, which is capable of storing up to 2000 music tracks. It also supports a Micro memory card with a maximum capacity of 64GB (the memory card is not included in the product). 3. **Lightweight and Portable**: Designed to fit in the palm of the hand, this music player is lightweight and can easily fit into a wallet or pocket. It is convenient to carry, especially suitable for scenarios such as sports, running, jogging, traveling, and hiking. 4. **Easy to Operate**: The MP3 player features a classic button design for easy navigation. Downloading is simple; just connect it to a computer and drag and drop music files or folders to complete the download. It can also be adapted to a car audio system through the AUX port. 5. **Format Support**: With lossless sound quality, it supports formats such as MP3, WMA, OGG, WAV, APE, FLAC, AAC LC, and ACELP (APE and Flac requirements: 8KHz - 48KHz, 1000Kbps). It does not directly support audiobooks and iTunes formats. B. Product Information - **Product Type**: MP3/MP4 Player - **Material**: ABS - **Main Control Model**: ATJ2117D - **Screen Type**: 1.8-inch TFT High-definition Screen - **Resolution**: 128 x 160 Pixels - **USB Port**: High-speed 2.0 Interface - **Audio File Types**: MP1, MP2, MP3, WMA, WAV, and Other Music Formats - **External Memory Card**: Expandable up to 64GB (the memory card is not included in the product) - **Built-in Battery**: 450mAh Lithium Battery - **Picture File Types**: JPEG, BMP, GIF - **E-book Types**: TXT - **Other Functions**: FM Radio, Recording, Games, E-books, Movies, Music, etc. - **Supported Languages**: English and Other Language Displays C. Package List - 1 MP3/MP4 Player - 1 Charging Cable - 1 Pair of Headphones - 1 User Manual - 1 Plastic Box