www.inbiotech-bg.com Review:

Sorry but despite my best efforts ( and calls to Trackr helpline) I have just thrown my devices away as the system is nothing short of useless. Firstly you must have the app running all the time which is fair enough. However if you accidentally switch the app off and back on again it won't work. If you ever use any other bluetooth device the Trackr becomes disabled and will definitely not pair again without a lot of work. In short I never could be confident that my devices were linked and whenever I tested them I usually found that they would not work. I love the idea but in practice the link is so unreliable it gives me no confidence whatsoever.

So, 90% of this bike is awesome. However, the wheels and the seat are garbage and should both be replaced if you plan on putting any serious miles on this bike.