Side-tone permits hearing your own transmitted audio while using a standard aviation headset. Optional 1050 mAh battery is available for extra operating time. The optional battery has the same physical size as the supplied 700 mAh battery. The radio comes with a Ni-Cd battery, wall charger, and a belt clip. A commercial version of the IC-A4 is also available.
Alkaline power works great for people who want a low maintenance, long storage life power supply.
Battery charger is not included. The sport version sports a lower price than the regular IC-A4. Average street price as of August, 2000. Inc. All specifications are subject to change without notice or obligation. All ICOM radios significantly exceed FCC regulations limiting spurious emissions.