Replace aging analog clocks with the multifunction CHRONOS CH93HP. This multi-function, 2-inch digital clock features 8 modes: Local Time, UTC/Zulu Time, Flight Timer, Countdown Timer, Stopwatch, Volts, Outside Air Temperature (OAT) and Secondary Air Temperature. Dual USB-A ports deliver up to 15 watts of power per port and allow you to charge your devices quickly and conveniently. CHRONOS is TSO certified, and an internal field-replaceable battery maintains Time and Flight Timer Memory, without aircraft power.