The Amron International Amcom II 2-Diver Portable Rechargeable Communicator - Internal Charger is the most versatile and powerful two diver communicator on the market today. The most unique feature of the 2825A series is separate channels and volume control for each diver and the tender for both uplink and downlink paths. Each diver may have different equipment such as microphones and speakers or different listening and speaking characteristics.
The volume on the Amcom II 2-Diver Portable Rechargeable Communicator - Internal Charger can be set individually for each diver and tender to a level that is optimal for them. Both divers can be set up on 2-wire and/or 4-wire mode, or one diver on 4-wire mode and the other on 2-wire mode or any combination of the two modes.

Volume setting for each diver and tender to their individual comfort level
Both divers can be set up on 4-Wire Mode or 2-Wire Mode or any combination of the two modes
Ability to use both dynamic and preamplified diver microphones with a unique circuit that detects microphone type and automatically adjusts volume levels
Weatherproof panel microphone for greater voice intelligibility
Communicator can be left on charge indefinitely without damage to the batteries or communicator (/23 and /24 versions only)
Communicator can be operated directly from the charger where AC power is available (/23 and /24 versions only)

Audio Power Output - 22 Watts per channel
Frequency Response - 300Hz to 12kHz
Isolation Transformer - Split Bobbin Medical Grade
Height - 10in (25.4cm) 
Width - 9in (22.9cm)
Length - 14.5in (36.8cm)
Weight - 22.5 lbs (10.2 kg)
Power - 110/220VAC 50/60 Hz (automatic sensing), or Internal/External Batteries 12VDC (/23 and /24 versions only)