When the stopwatch is not in motion, press to check the remaining 
memory capacity . 
HOW TO CHECK THE REMAINING MEMORY CAPACITY
E
Up to 50 lap times can be recorded. 
During a measurement is in progress, the remaining 
memory capacity can not be displayed. 
Remaining memory capacity
D
STOPWATCH OPERATION
Press to start the stopwatch.
D
Press to take a lap time. 
Lap number 
(flashing)
Lap time
lap 1
D
lap 2
Up to 50 lap times can be recorded. 
s
E
Press to stop the stopwatch.
Keep holding down for 2 seconds. 
E
C
To save the record 
The lap number and time are displayed for 7 seconds.
Each time the button D is pressed, the altitude at that moment will be displayed 
and recorded. 
Keep holding down for 2 seconds. 
s
The  RUN  record  is  stored  in 
memory and the stopwatch is 
set for the next measurement 
with a new RUN number. 
s
To delete the record 
The  RUN  record  is  deleted 
and  the  stopwatch  is  reset 
to zero.