USB In-line Card MP3 Player U Disk Mini MP3 Player Support 32GB TF Card Music Media Portable MP3 Music Media Player Feature: Built-in rechargeable lithium battery, multiple charging options. External memory: Supports up to 32GB TF card, and can also be used as a TF card reader (memory card not included). Supports music files such as MP3 and WMA formats. Can play 10 types of sound quality for enhanced music enjoyment. Simple, refined, and stylish design. Note: This device does not have built-in memory. A separate TF card is required. Product Specifications: Standby time: 48 hours Battery capacity: 80 mAh Headphone jack: 3.5mm Playback time: approximately 10 hours Operation method: Keystroke buttons Built-in battery type: Rechargeable lithium battery Interface: USB 2.0 Weight: 17.9 grams Dimensions: 8.5 x 2.5 x 0.9 cm Specifications: Digital music player supporting MP3 and WMA audio formats. Equipped with a built-in rechargeable lithium battery for up to 10 hours of continuous playback. Sleek, compact design with high-quality craftsmanship. Package Included: 1 x MP3 Player Notes: Due to differences in monitor displays, actual product color may vary from images shown. Please allow 1-3 cm variation due to manual measurement. Please if you encounter any issues before leaving negative feedback. Thank you for your understanding.