I've just started using this so idk how I'll feel about it after using it for a while but just a few things I noticed from the get-go! This is an EXCELLENT idea to keep around any vulnerable people in your life! It's easy to set up and use and I love that you can just listen in and it doesn't alert them at any time. I'm going to be honest, I bought this to find out FOR SURE, WITH NO QUESTIONS if my husband is cheating on me still or not. I only got to put it in his car one day so far and I didn't get any hits... yet. The tracking/GPS is awesome! Notified me when he left home, got to work and it notified me that he left work early and I was able to see in real-time that he was coming home early today. It showed how fast he drove (max speed and showed how fast he was driving at that time, which I thought was cool to know if hes in traffic or whatever). It showed how long he was at each place he went to, which is super helpful information! Now, the not-so-good stuff... first of all, when you activate the device you get 30 free days free but you have to put in a credit card number to activate it because after that month its $50/mo and idk how it works because it says if you cancel, you have to give 30 days notice (meaning you ARE gonna get charged at least once) and you have to pay a penalty to cancel so I feel kinda scared like I'm gonna be trapped in this contract now but Im desperate so I went ahead and set it up. If you don't know 100% for sure that you're gonna love it and keep it, don't take off that protective sleeve or they won't accept it back! That kinda sucked because the sleeve has a slippery texture and I couldn't attach it to the car with tape or velcro or anything, it just wouldn't stick! Now for the most disappointing part... so far, the microphone seems to be... well, not the best. It's pretty quiet and cuts in and out pretty bad or just barely picks up any sound at all. I obviously had to hide it so I couldn't get it super close to his face or anything. I put it in the back seat cup holder, just behind him. I expected the sound not to be that great because of its placement but I couldn't make out even a single word that he said. That was disappointing, to say the least. Now it's the weekend and I have to wait to try again til Monday. Hopefully moving the device to maybe under his seat will help and I'll finally have my answers, for better or worse and I can move forward with him, knowing he learned his lesson and is actually committed to me and only me or if after 21 years I should move out and move on! Wish me luck!