Appearance: The player features a classic design that is simple, elegant, and stylish. Function: Supports digital music playback in MP3 and WMA formats with display functionality. Power supply: Built-in rechargeable lithium battery provides up to 20 hours of continuous playback when fully charged. Language support: English (default), Portuguese, and Spanish. Automatic shutdown: Helps conserve power efficiently and supports eco-friendly usage by allowing automatic power-off timing settings. Item type: Mini MP3 Player Power supply: 1 x AAA battery (not included) Interface: USB 2.0 Weight: 31g / 1.09oz Color: Silver Material: Plastic + Metal Size: 9.5 x 2.6 x 1.6 cm / 3.73 x 1.02 x 0.63 inch Package Contents: 1 x Mini MP3 Player Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual item. Measurement error allowance is +/- 1-3cm.