The IC-M23 is a smaller version of Icom’s popular IC-M33, and like that model it will float if dropped into water, but this time Icom has gone one further and added a red flashing light that is activated on contact with water, making the radio easier to find if you drop it over the edge at night. The reduction in size is actually quite important is it ends up as one of the smallest VHFs on the market, and as such, it fits easily into the front pockets of a PFD.