\documentclass{beamer}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[czech]{babel}
\usetheme{brmlab-black}

\title{Brmlab example}

\author{Brmlab}

\begin{document}

\maketitle

\begin{frame}

\frametitle{First slide}

\begin{itemize}
\item ÁČĎÉĚÍĹĽŇÓÔŔŘŠŤÚŮÝŽ
\item áčďéěíĺľňóôŕřšťúůýž
\end{itemize}

\end{frame}

\begin{frame}

\frametitle{Second slide}

End!

\end{frame}

\end{document}