Support 4 people talk to each other at the same time motorcycle helmet bluetooth walkie talkie V4plus single package

Support 4 people talk to each other at the same time motorcycle helmet bluetooth walkie talkie V4plus single package Processing customization : Yes Add logo : Yes Bluetooth protocol : 5.1 Sound Channel : Stereo Binaural or not : Bilateral stereo Color : Black Mold Type : Private Mold Chip Type : Qualcomm Duration : 24 Specification : V4plus Usage : Cycling intercom Color : Length(cm) Width(cm) : Height(cm) Volume(cm³) : Weight(g) Black : 15.50 10 : 6 930 : 256