Ocean Reef GC2008 Adapter - for S/U ALPHA PRO X-DIVERS / ALPHA UWCP / MHA-2This is a great tool that creates multiple options for professional communication alternatives Features Water proof connectors. Connects MHA 2 (headset) unit to ALPHA PRO X DIVERS surface unit while underwater, changing from a G power SL configuration to a hard wire comm. This unit also connects the MHA 2 unit to the UWCP (under water cell phone) unit. Specifications Product Category Fullface & Communications Filter U W Communications Full Face Mask