BB 3.0 Long range superior voice clarity. Waterproof intercom. STANDARD 3.0: Intercall channel x1, handsfree phone, A2DP music MASTER 3.0: Intercall channel x3, able to link with 3 standard devices When in it’s waterproof case, it is 100% waterproof. Standard Units can talk to 1 other Standard Unit. For 3-way or 4-way communication, 1 Master Unit is required. You need to select a headset to plug into your 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 unit and screws into it’s casing. This exclusive design keeps the nit sealed and protected in it’s casing.
