Hey @karamyog, I really liked this one which is a great product for humans' best and most loyal friends! Thank you for sharing!

Here is my review:

Pros:

• It can be monitored also from Fitbit, Apple Health Kit and Google Fit device.
• It has an incredible battery life (up to 6 months)
• Fits for any size of dog
• It's waterproof

Cons:

• Does not have GPS (yet)
• It would may be nice to be able to view our dog's heartbeat in something like heart rate monitor.