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INTERCOM AND HEADSET PRODUCTS IC4T Horizontal Mount Vertical Mount IC4T Intercom Features > Coast Guard Approved Connectors > Voice Activated (VOX) > Four Headset Outputs > Cell Phone Interface > Prewired Simple Setup > Audio Input > Captain Isolate Switch > Volume and Squelch Controls > Powered from 12 V Boat Battery > Horizontal or Vertical Mounting > Dimensions: 3.0"L x 2.5"W x 1.0"H Headset Features Coast Guard Approved Connector Stainless Steel Hardware Noise Cancel