http://www.1stclock.com/ News on 1st Clock en-us 1st Clock 4.0 is updated with full Windows Vista and 64-bit Windows compatibility, completely new messenger-like alarm notifications and alarm priorities, alarm overview in the calendar and alarm schedule view in the alarm list, new built-in melodies playback on the external speakers with a selection of 128 musical instruments, extremely precise time synchronization, now with up to 1/50s accuracy, new powerful Windows integration technology, and many, many others... http://www.1stclock.com