The Advance Units have built in long range Bluetooth for real time communication. You do not need your cell phone or wireless network to connect. The units connect to one another using their own built in Bluetooth. The Advance Unit features include: real time talk, phone, music, live recording, volume control, mute and more. When in it’s waterproof case, it is 100% waterproof. The Advance Unit is the first ever waterproof equipment with the ability to live stream. You can pair 2, 3 or 4 people for real time talk using the Advance Unit. (6 can connect with limited range.) You need to select a headset to plug into your Advance Unit. The headset connects by a male 3.5mm jack and has the microphone and speaker. Your choice of headset you select will be according to where and how you wish to use your units for communication. The headsets have an exclusive design which plug into the Advance Unit and screws into it’s casing. This exclusive design keeps the Advance Unit sealed and protected in it’s casing.
