Review on Bluetooth Key Finder and Phone Tracker for Android/iOS - Anti-Lost Locator Device with One Touch Find - NUT Item Tracker for Keys, Backpack, Phone, Wallet - Improved Version 1 by Troy Early

Attached to key ring to make it work. If I drop my keys in the grass, I want to find them. However, the design flaw is the tiny "chain" that connects the device to the key ring. After this part fell apart twice, I ended up having to hastily assemble the wire, which is both unsightly and sticks to my clothes when I pull the keys out of my pocket and back. This is definitely the case of an engineer who thought this microcircuit was a good idea. It is not! If the device falls off the keychain, return to where you started and find your key.