This is a nice post that discusses the use of the \tdclock package. Following the tex demo provided in its answer, I modified my MWE below to use a stopwatch with the macros \cronominutes of that package. The problem is that I use the Antibes theme and would like to ask for support to add that stopwatch in the left corner (contrary side of the page numbering) in each slide.
I appreciate your support to achieve this, thanks in advance,
MWE:
\documentclass[compress,final]{beamer}
\usetheme{Antibes}
\setbeamertemplate{footline}[frame number]
\setbeamercovered{transparent=25}
\setbeamertemplate{navigation symbols}{}
\usecolortheme{dolphin}
\usepackage{ragged2e} % for justifying
\usepackage{lipsum} % for random texts
\usepackage{geometry}
\geometry{lmargin=.5cm, rmargin=.5cm}
\usepackage[font=Times,timeinterval=60,timeduration=30.0,timewarningfirst=15,timewarningsecond=25,timedeath=0]{tdclock}
\begin{document}
\quad\cronominutes % for crono stopwatch
\section{ITEM}
\subsection{item}
\begin{frame}
\begin{itemize}
\scriptsize\justifying
\item \lipsum[2]
\item \lipsum[1]
\end{itemize}
\end{frame}
\end{document}

\initclockinside the frame environment, because there is one empty slide when\initclockis inmediately below thebegin{document}. The thing withgeometryandjustifyingis only for the MWE, but thanks also for the tip =) – Gery Nov 18 '14 at 07:39