Precision of measurement
The SL500 swimming watch counts your lengths with a reliability of over 95%, using sensors that are sensitive to movements.
It gives you your distance in number of lengths or metres covered.
For a more accurate reading, swim with a regular stroke and avoid stopping multiple times during the same length as well as any movements that could cause interference.
Measures the four strokes
The SL500 watch measures butterfly, backstroke, breaststroke and front crawl lengths over full lengths in 25, 33 and 50m pools.
After each turn, it gives you the total distance, in metres or in number of lengths.