I have a OX-HC W512, which is certified for medical use. I wanted to make sure it would be reliable and correct.
In addition to having the alarm that you need for sports, it can also track heart rate and log your data. Later, you can then connect it via USB (or Bluetooth if you buy the upgrade) to do interesting analysis such as correlating your pulse and oxygen saturation with the route that you drove (mountain bicycling).
It's super nerdy, but a great toy for making your exercise feel like science.
In addition to having the alarm that you need for sports, it can also track heart rate and log your data. Later, you can then connect it via USB (or Bluetooth if you buy the upgrade) to do interesting analysis such as correlating your pulse and oxygen saturation with the route that you drove (mountain bicycling).
It's super nerdy, but a great toy for making your exercise feel like science.