Well, it works, just. But nowhere near as good as the previous generation one I had for a GO 700. That was a direct wireless cnnection, always on. The new ones are a Bluetooth connection, don't work at switch on. Need to press once to wake up, again to activate Bluetooth, wait for connection to TomTom. Several seconds wait all told. And then when in the menus, the response is much slower than it was on my 4-year old GO700. Main use for me is as the Phone interface, still no access to the 'end call' icon - which is not even on the screen now! You have to hit the GREEEN phone icon - to get the RED 'End' icon (!), then press it! Both mid-screen icons, i.e. not available from the Remote buttons, which are now only bottom-left & bottom-right. Given it's Bluetooth, have to wait & see about battery life, likely to be limited presumably. But it's still a lot better for most of the time than having to reach for the screen. I have mine stuck with Blu-tack to console by gear lever. Very handy.
Andy