Battery Operated MP3 Player Featuring Direct USB, Expandable Memory Card, LCD Screen Music Player

The exact battery capacity isn't specified in the product details. However, power banks typically offer sufficient charge to play music for several hours before needing recharging.

This MP3 player comes with expandable memory via a card slot. You can increase its storage capacity by inserting an additional memory card, though the exact size isn't mentioned here.

The design and features of this MP3 player are intended for general use. While not specifically marketed as a toy, it would be safe for older children or adults to use.

The exact duration isn't specified, but power banks generally provide enough playtime to enjoy music for several hours before needing recharging.

This MP3 player features a direct USB port which allows you to both charge the device and transfer files from your computer or other compatible devices.

Yes, this MP3 player supports various file formats such as MP3, WMA, WAV, and more. This means you can play a wide range of audio files stored on the included memory card or transferred via USB.

The build quality is designed to handle everyday use. The material used in its construction should withstand normal wear and tear, but care should still be taken during handling and storage.

This MP3 player includes a built-in rechargeable battery that you can recharge using the included charging cable via a USB port. You do not need to use a separate charger for recharging.

The MP3 player has an LCD screen which displays information such as song titles, artists, and progress in playback. The screen helps you navigate through your music library easily.

Details about any specific warranties are not provided here. It’s best to check the manufacturer's website or contact customer service directly for information on any available guarantees.