With the TEC-1 full face mask you utilise your own 2nd stage regulator.  The installation is simple.  Simply remove your existing bite wing mouth piece and insert the second stage regulator into the receptacle on the front of the TEC-l.  Tie wrap the connection and your ready to use the ffm and Buddy Phone®.

The TEC-BUD is the same as all other standard Buddy Phone® transceivers.  It is a push-to-talk system using state-of-the-art circuitry.  One small 9 volt battery powers the unit for hours.   In all, it is a in expense system yielding great underwater communications!