Many bluetooth tracking devices have been released over the years but few can advertise worldwide support. The new Wuvo Spot is one of the trackers that does in fact offer worldwide tracking at a very affordable price. I was able to get 10 through this Indiegogo campaign for $100. Quite the bargain compared to other trackers out there. They will make great gifts come Christmas!
Anyway, my experience with them was positive so far. I have kept 3 of the 10 for myself and attached them to my keys, wallet and headphones (things I commonly misplace in the house). They have all the regular features of trackers such as remote alarm, GPS locator and location history. I am able to track all of their locations on a simple and well-designed app on my phone.
The one negative thing I must say about it is the keychain it came with. When I was trying to attach it, the thread broke and I had to use some thread to fix it… It does come with a double-sided sticker solution for attaching to a flat surface on your belongings which was helpful for attaching to the inside of my headphones.