I've had one of these Garmin Nuvi sat navs for quite a few years now. It doesn't get used too much but has been used enough over the years for me to get really fed of of the ladies voice that gives the instructions.

These can be picked up for about £20 second hand these days as technology is getting more advanced so this is an older model which probably isn't like the all singing all dancing ones you can buy new now, plus cars have them built in now too.

I feel I am quite good with directions and having been to a place once can easily find my way back there again. This has been used when in a new area or a rabbit warren housing estate that we don't know.
I do find that this sat nav does tend to take you back roads rather then motorways a lot of the time. One time I was travelling up to Dartford in Kent a route I knew well up the M3 motorway then onto the dreaded M25 and round to Dartford. On this particular visit I thought I'd put the sat nav on to see what way it took me as a change of scenery would be good. Well it took me through think it was Guilford then over the M25 and into London, I was a bit worried I'd go into the congestion charge area not knowing where it began and ended up pulling into a garage to ask for direction as I had no idea where I was, anyway the lad at the garage comes to car and "says is that not a sat nav you have there? how can you be lost?" I felt so stupid. In the end I followed the sat nav as it took be right round the outskirts of London which was an hour longer to reach destination. Lesson learnt if you know the way don't trust a sat nav lol.

Since this trip I learnt the sat nav can be zoomed right out from street level view on screen to show you a larger area which would have been more helpful to me.

This plugs into a cigarette lighter in the car and this charges it up too. When you turn the car engine off the screen says switch off or stay on so if it is charged then you can still use it before needing to start car.There is a fiddly on switch which you slide on the top of it to bring it to life. Once it is on you choose yr destination by town, city or postcode. You can type in words then touch 123 button to swap to number pad part if inputting a postcode. It then displays options of the address with door numbers and you press the relevant address.
When I say press button I am referring to the button signs on the screen as it is all touchscreen.
The screen itself isn't huge about 3 1/2 inches wide but can clearly see whats on it without straining your eyes too much. It fits onto a holder on the windscreen and allows you to see it clearly from driving position.

Once you have submitted the required address you enter it and then can select the route size, so if you like to see a few roads in advance like I do you can or you can view it literally as you reach roads or from a further away view. The screen displays a road map and a little car imagine which moves when your car moves.
The display with the map also shows you the expected arrival time at your destination, if you go slower or make a stop the time will change.

As you reach parts of the journey when you need to turn into a different road the lady sat nav voice will say for example in 200 metres turn left and when on the turning will say turn left. If you choice to ignore the sat nav because you know a better way or miss the turn off then she says recalculating a couple times and finds another route that still gets you to your destination. It also shows on the screen that you need to turn in what ever distance.

This sat nav also gives you a warning alarm to any speed cameras that are on the roads and also gives you speed warning too.

You can control the volume by using the slide button on the side of the device, this is handy is you are on a long journey and only need to hear what is being said until nearer your destination, but the direction also show up on the screen what is being said anyway.

This comes with maps already installed into it for the Uk and parts of Europe but after having it a while some areas may have changed, i.e new housing estates, road closures so the sat nav won't pick up on these.

This is a small device and not heavy so can easily fit into a handbag if you don't want it left in your car.

On the whole I did once upon a time manage with just a map but a sat nav is much easier and always handy to have.