I have bought mics that were advertised as compatible with the very old TalkAbout 250 FRS radios Motorola sold. None of them fit. That radio uses a 2 pin connection and the spacing of the pins on those mics was not sufficient to plug into the TalkAbout 250.
This mic was in a legit Motorola package and it works just fine and the price was good.
Microphone is a great accessory to have for the talk about distance series, allows you to have a much smaller and lighter package in hand while the radio is secured.