Finally gotten round to fitting my long-time-back aquired early 1970's MiG-23 cockpit clock. Good for -75degC, +/-7G and is clockwork with 3 days power reserve. Has dual timezone, stopwatch, stop/start function and probably enough radioactive radium in the (amazingly) luminous markings to give us a sun tan. But hey, looks good (in my view) and should last better than the Friebe number that shook itself to bits over the last 5 years.