Took months to get. They were out of the combination lock for a long time. The mounting system is not friendly. I don't know why the screws are longer than the mounting bracket unless it's for the water bottle mount area but that's not what I ordered. I want to put it on a bar but the screws are so long they would be the only thing touching the bike...therefore scratching and sliding all over the place. My friends much cheaper little device is much more sensitive to the vehicle being touched and will alarm right away. Of course that doesn't have GPS track like this does which is the main reason I bought it. I love the trip record feature! I want to give 5 stars but the mounting is killing it for me.

The installation was simple after watching the short video.

Wish it were a little less bulky. Makes the bike look cobby. Would probably deter a thief by 5 seconds at most. Great idea, but needs design improvement.

I purchased this for my son who has an Ebike. This, in conjunction with his lock, gives me peace of mind where there was apprehension before. He has had a scooter stolen from our front lawn in a matter of minutes and is wary of going anywhere that requires leaving his bike alone. With The Boomerang, he feels comfortable being able to ride anywhere in our town without his bike disappearing. I also appreciate the gps tracking and app.
There are no guarantees but this is a deterrent and instantly notifies if there is any disturbance to whatever we lock the boomerang up to, giving usore than enough time before anyone had a chance to break or pick our lock. Oh....it can also be attached to other things like backpacks, campsite equipment, motorcycles, etc..