factory wholesale handheld wireless speaker sound amplifier loudspeaker for peddling multi-function folding megaphone outdoor promotional stall

681(240s recording and shouting, amplification, addition and subtraction volume) 918 single battery (double battery compartment can shout voice recording music alarm) standard single battery 918u single battery (260s dual battery compartment usb flash drive tf card socket) 918l single battery (350 seconds dual battery compartment bluetooth usb flash drive tf card socket) 619(120s recording and shouting music alert) 619u (240s recording usb flash drive tf card socket) 1500 battery + fixed charger + charging cable 619l(300s recording bluetooth usb flash drive tf card socket) 1500 battery + fixed charger + charging cable 916u (240s recording usb socket) 916l folding handle (350s recording bluetooth usb socket) 118l power display (350s recording bluetooth usb flash drive tf card socket) 219 power display dual speaker (350s recording bluetooth usb flash drive tf card socket)

standard