I am using this product on a 3.5kg cat. It is an excellent product for any dog/cat owner for complete peace of mind. The product does exactly what it says and more even if you choose to use the basic subscription. Not only it tracks your pet when outside in a reliable manner using GPS but it also allows you to set up geo-fences to receive notifications when the pet moves away from certain boundaries. You can even set up multiple geo-fences so that you can monitor your pet's movements even more precisely (i.e. home area, roaming area, danger areas etc).
The tracking usually updates every 10-25 minutes depending on the coverage of the area. This is more than sufficient because a pet cannot cover huge distances within that time frame anyway. The accuracy of the tracking also varies depending on the coverage of the area but it is accurate enough to locate your pet easily by sight when near it. There is even the option to remotely activate a buzzer on the devise and a small light to assist in locating the pet. But if that is not enough, the device can be put into LIVE mode where you can get much more frequent tracking and a more accurate location, in my case to within 5 meters (but at the cost of battery life). It is suggested to use LIVE mode only when trying to locate a missing pet rather than when just monitoring its movements.
The battery life is quite long, my cat is usually wearing the device for 4-5 hours everyday and the battery use is only 5-7% per day.
The design of the mounting of the devise could have been better as you have the feeling that it can fall off especially if your pet is hyperactive but this can be easily solved with some sellotape to secure the device on its bracket. Also the device is a bit bulky for cats and cannot really be attached on the animal's neck. I use a harness and I attach the device on the chest of the cat and this way it becomes really convenient for the cat but it also secures the devise is place and prevents accidental knocking or detachment.
The devise works in a lot of countries no matter where it is bought from and is supported by a very well designed smart phone application as well as a website with in-app map and other convenient features. There is also customer support via email so you can rest assured that you don't buy only a product but a complete and well supported service.
Overall the TRACTIVE is an excellent way to keep track of your pet without restricting its movements. I highly recommend it to all pet owners.