Charge personal electronic devices and maintain accurate time keeping with the CHRONOS CH93HP digital clock. This compact, 2-inch clock is TSO certified and features 8 modes of operation: Local Time, UTC/Zulu Time, Flight Timer, Countdown Timer, Stopwatch, Volts, Outside Air Temperature (OAT) and Secondary Air Temperature. It is available with a single, built-in USB-A charging port and delivers up to 15 watts of charging power