The 498's I have are brand new units and they come with a dual frequency, transom mount transducer with temperature. You can get either an internal or an external antenna.
The 498 was so good that it slowed down the acceptance of Garmins newer units. This is the first time in a while that I've had access to brand new ones. I'm guessing that Garmin finally released what they held back for warranty replacements.
Direct comes straight to you from my distributor. The AP (Angler Products Package) means the unit comes to me first. I set it up for ease of use, make sure it has the latest software update, preload 2 bay areas of fishing hotspots derived from Hook n Line maps, give you a waterproof cheat sheet for your unit and provide access to my online course for these units.