Hardwired, full duplex surface unit for underwater communications.

2 ports for 2 communication cables.

On/off and volume adjustment switches.

Microphone.

Switch for communication between surface & diver 1, surface & diver 2, surface & diver 1 & diver 2.

Headset port (headset optional).

External 12v power port (cable optional).

Battery charger port.

Audio/video recall.

Incorporated speaker.

12V rechargeable battery.

Underwater unit volume adjustment (for both divers).

Stand-by autonomy: 24h.