How can I modify the names of the measures in Micrometer?

At the moment, I get the following response for the timer on my endpoint /actuator/Prometheus:

# HELP MY_NAME_seconds  
# TYPE MY_NAME_seconds summary
MY_NAME_seconds_count{application="MyApplication",smth="else",} 520.0
MY_NAME_seconds_sum{application="MyApplication",smth="else",} 1249.024
# HELP MY_NAME_seconds_max  
# TYPE MY_NAME_seconds_max gauge

How can I change the name of my timer from MY NAME seconds count to MY NAME millis count? Metrics.timer(operation, tags).record(endTime - startTime, TimeUnit.MILLISECONDS);