[scottgg]

Not op but I also have a varia and feel safer for it. Living in Switzerland, cycle a lot on public curvy roads in the alps. Often I don’t hear someone coming if I’m focusing on something else important - like traffic in the other direction - or I don’t realise there’s actually more than one car about to overtake which the Varia also shows. Generally turning your head around to check is a bit dodgy!

[ashirviskas]

Why not just use a side mirror? I use one and it is so convenient

[RankingMember]

The Varia can give you auditory alerts so you don't have to take your eyes off the road and look in your mirror. In addition, it can tell you how many cars are behind you with a range that would be hard to see in your mirror.

[kgabis]

Varia can supplement bike mirrors with an early warning that a vehicle is approaching. Some people don't like bike mirrors (they look dorky), but personally I feel half-blind when cycling without a mirror.