Extended Timing Casio G Shock Chronographs

Casio has two extended timing G Shock chronographs. First is the GA100 which has 1/1000 second resolution and a total timing range of up to 99 hours, 59 minutes and 59.999 seconds or basically 100 hours. The second is the GD350 which has 1/100 second resolution and is good for 999 hours, 59 minutes and 59.99 seconds per the manual or basically 1000 hours or 41+ days. So far as I know these are the most extended range chronograph watches I am aware of and both are under $100 each on Amazon. Neither is radio synchronized or solar charged.

Not sure that with manual operation there is much point of resolution beyond 1/10 second but these both offer it as a bragging point in their specifications. The GD350 would have been great for Noah timing the 40 days and nights of rain per the Bible. Not sure of any other practical use.