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That sounds great, how does it show that you are off the route and does it show you a straight line to where you can re-join the route?
sohi-
It says something like 'Off route' on the screen and has arrows pointing you back in the direction you need to go to get back onto the route. The arrows turn red the further away you get from the route. It's nothing better than 'OK', but what's helpful is you can see roads/paths that will get you back on track, so it's not difficult to do that. Just doesn't give you a line to follow. Future firmware updates may change that, I'm told, but for my purposes it was absolutely fine.
Actually, one more gripe (probably more my fault) was that the gradient screen doesn't really give you a great idea of where to go. It shows how far you've gone up the climb and the level of gradient, but when I was climbing out of Amboise and the 'climb' consisted of more than one road, I didn't know where to go. However, it seemed to then give me some indications on the next hill I went up, so maybe it was just me being dense the first time round.
ketsbaia
OK, back from the tour and a first run-out for the iGS630 and first impressions are it's fine. Does the job with decently clear instructions when navigating. Not tried it at night, but it was fine at first light and cleary visible throughout the day even in stupidly bright sunlight.
Haven't tried route planning on it as cycle.travel does the trick for me and it's easy enough to load gpx files onto the computer through the app. I think it's perhaps route planning sites I have an issue with: I'm all for quiet roads, etc., but that generally means the road surface isn't as good, is more 'up and down' and often a bit roundabout. That was annoying, but not the device's fault.
Would probably take issue with the claimed 35-hour battery life. It went from just under half full to 5% within five hours, though that was on constant navigational use so perhaps not surprising. I gave it a 10-minute boost charge through the Anker and it was fine for the rest of the ride (another two hours).
Fits a standard Garmin mount nicely, comes with lanyard/screen protector and, honestly, I can't really fault it for the money. What it doesn't do is re-routing, which some people would find annoying, but I actually preferred on this trip when I wanted to slightly ignore the route and go off piste.
Loads of other features on it I haven't got near to using yet and probably never will. But if I do, I'll add to this overview.