Product model - 747d
product type - bluetooth mp3 decoder / audio player module
bluetooth version - bluetooth 5.0
bluetooth device name - bt-speaker
input voltage - dc 5v–24v
fm frequency range - 87.5mhz–108mhz
usb support - usb flash drive up to 32gb
tf card support - tf / microsd card up to 32gb
supported audio formats - mp3, wma
audio sources - bluetooth, usb, tf card, fm radio, aux / line-in
display - digital led display
audio output - r_out, l_out, agnd
amplifier - external amplifier required for driving speakers
remote control - wireless remote included
remote battery - included; typically cr2025
fm antenna - external antenna