The Megastek MT90X is a very compact lightweight tracker suitable for most dogs and some larger cats.

It has the following features

Our View:

Pros: Lightweight

Waterproof

Good battery life - with optional pet modes enabled (one to three days)

Audio monitoring capability

On/off switches on tracker

Cons:

Unique command set - limits application options to manage it.

Small size limits GPS/GSM signal in poor reception areas.

Note - all these trackers have a tendency to fall to the underside of the collar which means they can sometimes lose GPS signal when operating in poor signal areas - For all but the smallest animals this can be eased by placing a small weight at the opposite end of the collar. This will counterbalance the trackers weight and encourage it to stay where it has a better view of the sky.