dust proof water proof shock proof.....meant for bikes bluetooth wireless gps instructions handsfree phone call through my scala rider q2 and my lg dare instantly connects via bluetooth and adds contact list right in.....someone calls ringing in my helmet look down see who it is and talkn hands free at 80MPH!!!!!!.....clear as can be no wind noise at all on the other end!!!!! kinda wierd talkn in normal tone of voice at 80 with all the wind noise.....the other end cannot even tell u on a bike until u rip the throttle then they hear a 2007 cbr1000rr in my case ....gas guage is priceless enter in miles per tank and it simulates a fuel tank on the speed screen.......omfg i will rave and rave about this unit until my point is acrossed now ....FUCKING FLAWLESS SETUP!!!!!!!! 650 bucks well well well spent!!!!!!!!!!!! desensitized screen for use of gloves oh fuck it im copying and pasting THIS IS TOP OF THE LINE MOTORCYCLE GPS END OF THREAD!!!!!!!! http://www.amazon.com/Garmin-Zumo-3-5-Inch-Portable-Navigator/dp/B000H2W4E6/ref=sr_1_1?ie=UTF8&s=electronics&qid=1259633169&sr=8-1