More safety and freedom for your dog with greta

With greta GPS tracking systems, we can take our lovely friends out with peace of mind. You will receive an instant warning when the application leaves the specified greta.

You can let the dog off the leash lightheartedly

Runaway dogs find greta fast and reliable thanks to precise GPS tracking. Extra small and easily designed so as not to disturb your dog. 

You can define different tracking intervals between 10 seconds and 24 hours according to your needs.

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Safe and long walks with greta

Notifies you when your dog has its defined leaching surfaces (e.g. The home garden) leaves. Our greta is also suitable for long walks. Your 630 mAh battery lasts up to 5 days when tracking actively, depending on the tracking interval set.

Technical Features

Handy and Light

GRETA is the lightest of all GPS trackers and is so flexible that it will not burden your pet and can be adapted to any dog ​​collar.

Wireless Charging

GLONASS supplementation of GPS systems also improves positioning in high latitudes.

IP 67: dust and waterproof

Our trackers are waterproof and completely protected against the ingress of dust.


Active almost worldwide

GRETA can be actively used in approximately 150 countries. So you can follow it anywhere in the world.


Thanks to the integrated SIM card, you can locate meintal nearly anywhere in the world.

GLONASS supplementation of GPS systems also improves positioning in high latitudes.

In the event of an emergency, you will receive push notifications or a phone call, depending on your preferences.

You will be automatically warned if the GRETA exceeds or falls below a temperature previously set in the app.

Define as many fields as you want in the Prothelis application, which you can activate individually according to the program.

GRETA’s battery consumption depends on usage behavior. The battery life is up to 5 days if used actively and up to 24 days on standby mode.

Check out the accessories!

Order Greta

Get a new GPS tracker at affordable prices and get started right away. So you and your dog can enjoy the freedom without worry.

Download The Free App

You can download our free Prothelis application to your Android or IOS device and also use the web application.

Greta User's Guide

Here you can find a detailed user manual of your Greta device that can assist you from setup to follow-up.

For more information or to buy, you can visit our online store.

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