The SM4 is the first original range brought out by Wildlife Acoustics. It began with both the SM4 for birds and frogs. As well as the SM4 Bat with an ultrasonic microphone to catch the calls of bats. The SM4 is quite large but this comes at its pros and cons. A pro is that is can take more batteries and lasts longer then the other ranges. A con of it being so large is that it is easily visible making theft much easier if that is an issue. Browse the rest of the range for the best option for you.
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