Feature Highlights: 1. Compact & Portable Design – Measuring just 6.7 x 3 x 1.7 cm, this sleek MP3 player is lightweight and easy to carry anywhere. 2. Wide Audio Format Support – Plays both MP3 and WMA files, so you can enjoy your favorite music without compatibility issues. 3. Expandable Storage – Supports up to 16GB with a mini SD/TF card (card not included), giving you plenty of space for songs and audio files. 4. Built-in Rechargeable Battery – Features a long-lasting lithium battery that charges quickly via the included Mini 5P data cable (cable not included). 5. Dual Functionality – Works as both an MP3 player and a USB flash drive with high-speed USB 2.0 transfer for easy file management. Product Details: This mini MP3 player combines a stylish aluminum alloy body with practical features. It supports MP3 and WMA audio formats and can be expanded with a mini SD/TF card (sold separately). With its built-in rechargeable battery and USB 2.0 interface, it also functions as a portable U-disk. The player is compact, user-friendly, and ideal for music on the go. Specifications: - Size: 6.7 x 3 x 1.7 cm (L x W x H) - Material: Aluminum alloy - Audio Formats: MP3, WMA - Expandable Storage: Up to 16GB via mini SD/TF card (card not included) - Interface: High-speed USB 2.0 - Battery: Built-in rechargeable lithium battery - Charging Cable: Mini 5P data cable (not included) - Color: Random (color cannot be specified) Package Includes: 2 x MP3 Music Player Important Notes: - This listing includes ONLY the MP3 player(s). TF card, USB cable, and headphones are NOT included. - Color is shipped randomly; specific color requests cannot be accommodated. - Slight color variations may occur due to lighting and screen differences. - Size tolerance: +/- 1–3 cm.