This is the OTS Surface Conversion Kit Converts a 2010, 2001B-2, or 1001B into Portable Surface Station Features: The CDK-6 Surface Accessory Kit is designed to convert an SSB-2010, SSB-2001B-2, or SSB-1001B into a portable surface station After a quick and easy installation, you can talk to other divers and/or surface stations within range and on the same channel Once installation has been completed, you may control the dive unit via the PTT control and may modify your settings for VOX/PTT mode, squelch, earphone volume, and channel The CDK-6 is perfect for fast response and when space is an issue Many Team Leaders utilize the CDK-6 in small craft The Kit consists of a deluxe headset with boom microphone (THB-13) with a built in Push-to-talk (PTT) control, and a 55&'; transducer cable (TC-35S) including connectors DOES NOT INCLUDE SSB-2010, 2001B-2 or 1001B The CDK-6 Surface Accessory Kit is designed to convert an SSB-2010, SSB-2001B-2, or SSB-1001B into a portable surface station. After a quick and easy installation, you can talk to other divers and/or surface stations within range and on the same channel.