I recently buy a little sport car for jaunt through the countryside with my wife . the one thing it do not have be a compass . know that we would be go to unknown place and area , and have have compass build in to we other vehicle , I be aware of the help the compass could give on back road when you be try to find a road or a place . the aftermarket compass all seem to be quirky at best and completely wrong at worst -lrb- digital or otherwise -rrb- . initially I buy a -lrb- ... -rrb- bubble Bell compass -lrb- suction mount -rrb- . it work -lrb- or do not work -rrb- as mention . so I start do research on the internet . I run across the Garmin StreetPilot c330 during my search . -lrb- ... -rrb- . after read the first 10 review , without totally know what I would be get , I decide to order the c330 -lrb- -lrb- ... -rrb- -rrb- from Amazon . still research since I have pick the SuperSaver freight and have a few day before shipment , I find the Garmin website which explain both the c330 and the c340 . I find that the c340 have many of the feature the $ 1000.00 unit have . it have a better map datum base , it tell user the name of the street and it be also capable -lrb- although I will not be use the feature -rrb- of receive traffic datum signal -lrb- with a plug-in adapter and a yearly subscription -rrb- . -lrb- ... -rrb- . I figure that I would try it out and if it do not at least solve the compass problem , I would return the unit to Amazon . so I cancel the order for the c330 and order the c340 , this time pay the $ 6.00 shipping to get it sooner . in the meantime , I download the c340 owner manual -lrb- http:\/\/www.garmin.com\/products\/manual.jsp?product=010-00401-20 -rrb- and quick reference guide to study before it arrive . it look a little too simple to believe it would actually work . -lrb- P.S. Download the manual , because the c340 only come with a Quick Reference Guide ; no manual -rrb- . well , yesterday the c340 show up . it cam in a large enough box to concern I , but that be only to protect it during shipping . once I open the box , I find a sealed package -lrb- envelope -rrb- that say OPEN ME FIRST -rrb- , the windshield mount bracket and the power cord -lrb- 12v -rrb- . I notice right away the on the back of the OPEN ME FIRST envelope it state if THIS PACKAGE be open , the itme be NOT RETURNABLE OTHER THAN for DEFECT . be a old and irritated software buyer , this do not impress I very much . I figure I would return it somehow if it do not stack up . I open the envelope and take out the CD and the usb cable . the direction say to install the CD and have you c340 with the USBN cable ready to plug into you computer . I put the CD in and after a couple of menu screen , the program instruct I to plug in the unit to the computer . then it go through the registration process . it say `` congratulation '' and the program end , have install the usb driver for the c340 on my computer . Garmin have what they call a `` pous loader '' program -lrb- point of interest -rrb- , which you have to download from the Garmin website . I have not find any of these on they website . evidently the usb driver be there for future map update , etc. . in ANY case , I finish with the computer and begin to play with the c340 . I find that I only need to refer to the Owners Manual once or twice . the c340 be incredibly user friendly and allow you to play with it in the house -lrb- it come with charge battery ; which by the way recharge in the car -rrb- . the touch screen be super , clear and quick . I be able to go through a lot of the procedure list in the reference guide with the satellite hookup -lrb- the c340 do that once you get outside -rrb- . so , today be the big day for test the unit . I just have my truck work on and want to test the cruise control . I decide to go to a know location first . when I search for store , the c340 come up with the exact Outlet mall I be go to . once on the screen you just press `` go '' . the unit show you the 2 or 3 dimensional map -lrb- I prefer the 2d map -rrb- and start talk to you . I select English-Jill for the voice since it supposedly speak the name best . I have choose `` shortest route '' instead of `` fastest route '' -lrb- the 2 option the c340 give you -rrb- . without do anything else I intentionally follow `` she '' direction to see how accurate the c340 would be . frankly , I be impressed and amaze . the unit be flawless in get I there -lrb- @ 50 mile -rrb- , even tell I the correct name for road I have be on hundred of time and do not know . once we get to the Outlet mall in good shape , I decide to go to a amish restaurant way out in the country -lrb- 50 mile of small backroad -rrb- . the Garmin c340 do not have the exact place in storage , but it allow you to type in a city and I find a place that be nearby . I figure that if I make it to the actual restaurant , I would use the `` save favorite '' button to put it in the c340 memory . then in the future I would be able to get there from anywhere . this be a super feature of at least the c340 and probably the c330 . when you be at a place that you will want to go to later it be a simple task to save the location , and then the c340 will take you there from anywhere . in any case , I follow the direction the c340 give I and soon we be travel on little country road I have never be on . it show you compass head as you drive , and we be head in approximately the right direction and have all day , so I let the c340 run the show . it show you speed and the estimate time of arrival . it tell I from the beginning that we have about 1 1\/2 hour to drive to get to the restaurant . needless to say , we arrive at the location I have pick -lrb- which be about 1\/2 mile from the restaurant -rrb- in just about that much time . the 2 time I get off track because the road be not marked very well , the c340 recalculate the trip and give I direction to get back on track with a new estimate time of arrival . the unit have a `` detour '' function on it , but I have not find it necessary yet . if you just go another way , the c340 initially try to get you back on track , and then give up and recalculate a new set of direction from you current location to the destination . once at the restaurant , I save the location for future use . now I be ready to go home . before I leave the house , I have program -lrb- not really `` program '' ; its about a 2 step button push -rrb- my HOME . now I just push `` where to '' ; `` Home '' and we be on we way . since I have travel this route many time , I decide to go my regular way -lrb- I be get tired -rrb- , and make the c340 correct any difference . on the way back , there be two instance of `` difference '' . both involve small jog that probably be `` shorter '' by a few foot . I ignore the instruction and within seconds the c340 have make the adjustment to get we back on track . the c340 use almost the EXACT route we always use to get we home . it be flawless . after get home , I decide to go to the store . rather than programming something in , which I -lrb- a -rrb- do not need direction to ; and -lrb- b -rrb- would not save anyway , I just decide to push `` Browse Map '' . this bring up a map show my exact location , compass head and speed . I do lose the satellite for about 30 seconds during this ride -lrb- it show on the screen which stop move also -rrb- . I turn the c340 off and then on , and it find the satellite . I continue on . once do at the store , I push `` Home '' and it give I direction right to my house again . I think enough of this c340 , that I buy another windshield mount and a ac adapter for it -lrb- I find they on ebay -rrb- . I have see complaint for the Garmin case that Amazon sell that it be not big enough . I feel it be too big . I just want a case to contain the main head of theunit , since you do not want to leave it in the windshield when you be out of the car and I want it protect . I find a Sony LCS-CSD Soft Carry Cas for a Cybershot camera that fit the head perfectly -lrb- -lrb- ... -rrb- -rrb- at Staples . so far in the 2 day that I have own this unit , I feel that it work great , be simple to operate and I think it be money well spend . it should really be useful this summer for we country road trip . my wife be impress with this gp also . I may get she one for Mother 's day . I have list below information from the Garmin website . you should visit they website and download the manual if you be interested in this gp . one world for the c340 : SUPER Information from the Garmin website -lrb- http:\/\/www.garmin.com\/mobile\/products.html#automotive -rrb- as of 3\/10\/2006 the StreetPilot `` c-series '' gp navigator feature a simple touchscreen interface , with automatic route calculation to any destination and turn-by-turn voice-prompted direction along the way . select a destination be straightforward and require only a limited amount of input from the user . plus , the StreetPilot c320 and StreetPilot c330 allow you to choose between a three-dimensional navigation view or the more traditional `` bird 's eye '' overhead view . for the ultimate out-of-the-box convenience , the StreetPilot c330 come preprogram with highly detail MapSource City Select street datum . the database feature nearly six million point of interest-including hotel , restaurant , gas station , atm , and attraction . -lrb- the c320 come with a 128 mb sd card and a MapSource City Select cd-rom for datum transfer from a pc via a usb connection . -rrb- as a add benefit , you can now import customize point of interest with the help of Garmin 's free pous loader software . the possibility be endless - upload safety camera or school zone , and you will receive a warning if you be travel too fast . in addition , a optional proximity-alert feature notify you of upcome custom poi . the centerpiece of both unit be a bright , 3.5-inch diagonal , 16-bit color display that make navigation a snap . the StreetPilot c330 feature dual integrate speaker for high-quality voice prompt , and a internal lithium-ion battery for out-of-car route planning . the new StreetPilot c-series boast distinctive and sleek styling-the only button be a rotary volume knob and a on\/off switch . the device be secure by a suction-mount cradle that fasten to the windshield for easy portability between vehicle . user can customize they unit 's appearance with a array of color faceplate -lrb- sell separately -rrb- . Garmin part number : 010-00401-10 -lrb- ... -rrb- -lrb- for domestic US market only -rrb- the StreetPilot c340 provide in-car navigation that be simple for anyone to use directly out of the box . after select a destination from the user-friendly touch screen interface , Garmin 's text-to-speech feature tell user the name of the street , when to turn , and in what direction . if you miss you turn , the c340 automatically calculate a new route to the destination . notification of traffic delay be a c340 option that let driver see congested area via a color-code map . this feature let user avoid traffic by simply push a button that will calculate a new route . this traffic awareness be make possible via the new Garmin GTM 10 TM FM TMC receiver that connect to select Garmin street navigation product . the GTM 10 receive digital datum from specific FM broadcast station in select major metro area throughout the United States and Europe . the StreetPilot c340 come preprogram with highly detail City Navigator  NT street datum of the entire United States , Canada , and Puerto Rico . the database feature nearly six million point of interest-including hotel , restaurant , gas station , atm , and attraction . as a add benefit , you can now import customize point of interest with the help of Garmin 's free pous loader software . the possibility be endless - upload safety camera or school zone , and you will receive a warning if you be travel too fast . in addition , a optional proximity-alert feature notify you of upcome custom poi . the StreetPilot c340 join Garmin 's grow line of automotive gp navigator . it have a bright , 3.5-inch diagonal , tft display with touchscreen ; dual integrated speaker for high-quality voice prompt ; and a internal lithium-ion battery for out-of-car route planning . the StreetPilot c-series boast distinctive and sleek styling-the unit ' only button be a rotary volume knob and a on\/off switch . the device be secure by a suction-mount cradle that fasten to the windshield , for easy portability between vehicle . user can customize they unit 's appearance with a array of color faceplate -lrb- sell separately -rrb- . Garmin part number : 010-00401-20 -lrb- ... -rrb-