Spy Tec M2 Waterproof Weatherproof Magnetic Case for STI GL300 Review

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Sometimes, having a GPS tracker isn’t enough, especially when you live in an area where rains are the order of the day. For, GPS devices just hate water and their performance suffers from the first drop of it. Thus, if you want to make sure your GPS device remains protected, the Spy Tec M2 might help.
Spy Tec M2 Waterproof Weatherproof Magnetic Case

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First thing first, the Spy Tec M2 magnetic case is designed to only protect Spy Tec’s very own STI GL300, as the dimensions of both complements each other. It means that it might not be any good for any other GPS device that you may be using.

However, if you are using the Spy Tec GL300, this magnetic case could be a godsend. Take, for instance, its length, weight, and air-tight capability. Measuring the length of an eyeglass case – and weighing just 3 ounces, this case is very easy to attach to your vehicle and is next to impossible to track down.

And to protect the GPS device against shenanigans of Mother Nature, its air-tight capability comes into play. The moment you snap the case shut, no amount of dust, water, or moisture could get into it, which means the security of your device would be guaranteed.

The fact that Spy Tec has gone for hard-plastic – and not stainless steel – as the material of construction of this case might divide opinions. However, if you ask us, we agree with Spy Tec as, while hard-plastic isn’t obviously as sturdy as stainless steel, it doesn’t interfere with incoming and outgoing GPS signals.

Equally important is the fact that the entire outer surface of the case has magnets attached to it from the inner side, which gives it two unique benefits. First, you could attach the magnet surface to any metal surface without any special installation requirements. Second, when you’d dislodge it, the magnets wouldn’t leave any trace behind, so it’s very difficult to trace them out.

User Critique

Some people complain that once you attach the case to the vehicle, its magnets do not allow it to come off easily, making the case difficult to dislodge.


  • Strong Magnets make the case easy to attach with any magnetic surface
  • Hard plastic doesn’t interfere with signals
  • Lightweight and barely noticeable


  • Won’t come off a metallic object easily

Our Verdict

If you are using the Spy Tec STI GL300 GPS tracker – and looking for a way to make it secure, but do not want to compromise its performance as well, the M2 Waterproof Weatherproof Magnetic Case would help.