Stopwatch measurement operates independently of the time display.
Split time measurement cannot be performed.
Before using the stopwatch, reset it and check that the stopwatch hands (seconds hand, minute hand) are stopped at “0 seconds and 0 minutes”.
How to reset the stopwatch
Press button A (start),
button A (stop) and
button B in this order.
8T61/8T63
The stopwatch can count in 1/5-second increments. Measurement can be carried out for 60 minutes.
Measurement will terminate automatically after 60 minutes of counting.
8T67
The stopwatch can count in 1/5-second increments. Measurements can be carried out for 12 hours.
Measurement will terminate automatically after 12 hours of counting.
The names of the parts and functions of the stopwatch (8T61)

-
Stopwatch seconds hand
-
Stopwatch minute hand
-
Button A
-
Button B
moves in 1/5-second increments
Some models do not have 1/5‑second increments marked on their scales.
moves in one-minute increments
Start/Stop
Reset of the stopwatch
The names of the parts and functions of the stopwatch (8T63)

-
Stopwatch minute hand
-
Stopwatch seconds hand
-
Button A
-
Button B
moves in one-minute increments
moves in 1/5-second increments
Some models do not have 1/5‑second increments marked on their scales.
Start/Stop
Reset of the stopwatch
The names of the parts and functions of the stopwatch (8T67)

-
Stopwatch seconds hand
-
Stopwatch hour hand
-
Stopwatch minute hand
-
Button A
-
Button B
moves in 1/5-second increments
Some models do not have 1/5‑second increments marked on their scales.
moves in one hour increments
moves in one-minute increments
Start/Stop
Reset of the stopwatch