Portable wireless bluetooth speaker pendrive supportmicro sd card

How to play music from my flash drive in a wireless speaker if it has speaker with pendrive slot Arc Bluetooth Speaker with Phone Holder features 01 Magnet button 02 Inner side pockets 03 Zipper closure 04 Mobile slot 05 Premium material 06 speaker with pendrive slot slot usb pen drive slot aux input mode mini super bass splashproof Speaker WS 887

slot svelte Mini Wireless Bluetooth Speaker ET-R887 I Bluetooth I AUX I FM I Memory Card I USB 24K