This Davtron Multifunctional Aircraft Clock has a 2ATI mount and features:

Greenwich Mean Time Local Time Flight Time Flight Time Alarm Elapsed Time Count Up, Count Down, Alarm Detailed specs of the M850 Aircraft Clock include: Greenwich Mean Time: 24 hour format Local Time: 12 hour format, 24 hour option Flight Time: Records in 99:59 standard, 99:99 hour option Elapsed Time Count Up: Starts in minutes, seconds, then hours, minutes up to 99:59 hours Elapsed Time Count Down: Settable from one second to 59 minutes, 59 seconds Elapsed Time Alarm: Activates at zero when counting down Incandescent Displays: Readable in sunlight Automatic Dimming Polarizing Filter Battery Type: AA alkaline Keep Alive Current: 0.00004 Amps Input Current: 0.2 Amps Input Voltage: 28V (14V or 5V backlight available) Crystal Reference: -40C to +60C .001% Weight: 5 ounces Warranty: 1 year Features of the Davtron Aircraft Clock M850: Two button control system is natural and error free. Setting operations are IDENTICAL for both alarm and time setting. Patent pending. Bright sunlight readable incandescent displays. Illuminated buttons and annunciators for night viewing. Flight time recorded in hours and minutes or in hours, tenths and hundredths. Serial time data output for remote use. Flight time alarm with external output. Elapsed time count down timer with alarm. A 4 Megahertz crystal precision time reference.