Small enough to comfortably fit inside a pocket, and yet the built-in loud speaker is audible in the most noisy of cockpits. 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.
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. Yet, it is every inch an ICOM, chock full of the useful features you've come to rely on. Its palm size is very convenient for carrying on your belt with the supplied belt clip. Well labeled and well spaced keys are easy to operate, even while wearing gloves.