Here is a picture of the display.
It shows minutes:seconds: hundredths of seconds. It puts a zero before the hundredths if it is less than 10, so rather than 1:23:3 it displays 1:23:03. This works fine for 5 minutes and 27 seconds then is displays 1:34:022 ie there is a zero before the hundredths even if they are greater than 10. Only the edge of the final digit appears though.