Outdoor Long-range Cmouflage Wired Amplifier Bluetooth Amplifier Headset Teachers With Microphone Training Special Amplifier

Support MP4 : Yes Support MP3 : Yes Voice Record : Yes Dimensions (WxHxD)) : 9.5CMx9.5CMx4CM Weight : 400 Material : Plastic Battery Life (Hour) : 8 Hours Item Type : Wearable Megaphone

Power mode : USB Power supply mode : Built-in lithium battery Play format : MP3 Is there a radio function : have Product weight : 0.55 Connection mode : Bluetooth connection Interface type : USB TF Card Packing list : Microphone, data cable, belt, instruction manual display : have Number of speakers : 1 Appearance dimensions : 9.9X7.8X2.8CM Sound box adjustment mode : knob Applicable crowd : currency Channel : Monaural Box material : Plastic Battery capacity : 2200mAh Shell material : Plastic Mode of operation : Key Function : Card insertion effective range : 10 meters Support format : USB flash disk, TF Card