The GSM DC underwater transceiver unit incorporates the latest innovations in underwater ultrasonic 2-way radio communication.   It is designed for use with all Neptune Series masks, but can be used on any full face mask equipped with a standard DIN female connection

• Wireless ultrasonic unit
• Digital driver for vocal message equalization
• Automatic system for activating transmission (DAT)
• Double transceiver channel
• Automatically activated once submerged in water, receiving also automatic
• System type H-SSB

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