Does this mask include communication?
Hello, no it is not included. Below is the link for the communications add on. http://www.scuba.com/scuba-gear-168/027690/Ocean-Reef-GSM-Dual-Channel-Communication-Unit.html
Designed for Technical divers by Technical divers.
The Predator Tdivers was designed in collaboration with the Team Blue Immersionin Dahab. Thanks to their technical diving experience the TDivers mask is specifically for back mounting and side mounting configurations.