Portable Aluminum Alloy Micro USB Mini Digital Stereo Super Bass Speaker Ubwoofer MP3/4 FM Radio Receiver Music Player Features: Made of high quality fluorescence surface aluminum alloy, elegant and stylish in appearance. Good sound quality lets you indulge in your favorite music. Supports Security Digital Memory Card, TF card, USB disk, FM, etc. Supports Line IN function, receiving the audio source from MP3, MP4, PC, Notebook, Phone, etc. Supports USB2.0 high speed transmission, fully compatible with USB1.1. Descriptions: Function Buttons: on/off, menu, previous song, next song, play/pause, volume control. LED display panel. Built-in high capacity rechargeable battery, support long play. Compact and portable, convenient to carry. Specifications: Item Size: 50*50*50mm Material: Aluminum alloy Power source: Li-ion battery / DC5V SNR: more than 80dB Music format: MP3 Colors: Green, Red, Blue, Silver Package Included: 1 x Mini Portable USB Speaker 1 x 3.5mm Audio Cable 1 x USB Charger Cable PleaseNotes: 1.Please allow slight dimension difference due to different manual measurement. 2.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!