4 ms·At least the Casio watch I'm wearing at the moment doesn't dispaly a leading zero.by iliis 13y agoAt least the Casio watch I'm wearing at the moment doesn't dispaly a leading zero.shrikant 13y agoI believe the custom in digital watches is that a leading zero implies a 24 hour display.iliis 12y agoSorry to dissapoint you again, my watch is set to 24 hours ;)