using Bluetooth Speaker in SD Card Mode - MP3 player

Waterproof Portable Wireless Bluetooth Speaker 60W Outdoor tf slot on bluetooth speaker What is Portable TF Card Slot Bluetooth Speaker, BT2107 manufacturers & suppliers on Video Channel of tf card slot meaning a better visual experience + Supports hands-free calls + With TF card slot, can play MP3

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