https://commons.wikimedia.org/wiki/File:Rock_hopping_krabi.jpg
The belt is not compatible with the Ambit3 watch. Suunto Smart Sensor is a better alternative if people want to use their belt while climbing or engaging in other outdoor activities. Instead of using the Ambit3 watch when you plan to climb a mountain with your friends or want to participate in a 5k run, use other devices that work well with the belt.
The belt also work well with the heart rate monitors that i have listed here:
Suunto Ambit
Ambit2
Ambit2 R
t3
t4
t6
M4
M5
Quest
Ambit2 S
While this belt works really well outdoors, it is completely accurate indoors as well. You can give one as a gift to other people who are partnering with you to train for a specific event and they won't be disappointed. You can easily replace the battery and it does not have any small parts that are difficult to deal with. You won't have to worry about it giving problems after you go on an extremely strenuous run.
The Suunto Dual Comfort Belt stands up to to the wear and tear of most physical exercises that people who like extreme sports tend to engage in. If you are concerned about the battery charge because of other devices you've had that give out on you right in the middle of a training session, you don't need to be. They last a long time.
