It always bothered me that they would install a software defined radio (SDR) inside such a tight waterproof case! The nature of an SDR comes complete with microprocessors which will get hot, very hot. And a waterproof/moisture resistant enclosure by design comes with no ventilation. So, how do they dissipate heat? They incorporate heat sink technology which gives the heat a path to follow away from the components it can harm. That heat is dissipated off of the components to the outside of the case. A two-way radio (handheld transceiver) Is dependent on the expectation it is being held in your hand, your hand acting as a heat sink, drawing the heat away from the radio. I’ve had a small Kenwood amateur radio get so hot I have had to put it down! In the case is the SDS100, Scanner Master offers an aftermarket heavy leather carry case. But before they marketed it they made sure it had vent holes on each side of the case on the lower end and breathing room up the backside. You should not remove the radio’s swivel belt attachment post, a post that protrudes from the backside of the radio case Because it maintains that ability to circulate air and dissipate heat.