A MIDlet with an arbitrary number of countdown timers and stopwatches and pure MIDP 2.0 controls.
(click to start or java -cp me4se-3.1.9.jar;Timers.jar org.me4se.MIDletRunner de.killig.j2me.Timers)
Timers.zip (source code)
Nokia Energy Profiler on an E51 400.34.011 with screensaver active:
I have to look into this.
Sven Killig 2004