A long battery life is a blessing for any product, of course, but for such a device it is very useful. No one wants to move around with Fido's collar in a few days, and it is a big bad luck that dictates that they will be able to escape when it is on charge. The Fi collar uses AT&T's LTE-M networking network to continue as long as it does. It also has a useful lost dog mode, which tells owners and dog walkers immediately if the dog changes out of its permitted area. This comes with a remotely activated collar light, so the dog will be easier to spot at night.
Like Whistle, Fi requirements require a subscription to access to all of its features, although it is a bit cheaper than the main competitor: between $ 1