Do you want to know more about ameriking elt?  It has triple frequencies and is applicable to all general aviation aircraft types.  It also have dual antenna which is whip type and portable to use.  Its lithium battery packs is ultra long lasting up to 78 hours.  It has the easiest installation.  There are a lot of accessories like Pre-fabricated Wiring Harness Assy, Remote Control Panel, Audible Warn Buzzer, Coaxial Cable Assy, and Universal Mounting Tray.  Also check out Garmin 496, the best technology for mini multi-function display like viewing you exact position on Taxiways, Accessing the AOPA Airport Directory, Receiving altitude sensitive alerts, experiencing a faster update alerts, enhancing situational awareness, adding weather, traffic and radio, navigating by air, land or sea, and the most evolved flying portable.  Visit the site now and compare the prices.  There are more accessories to have in the prices for less.