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The Global Positioning System or GPS is a portable car gps systems, which uses satellites and smart device to determine position of a receiver on this world. It is a constellation of 24 satellites, which giving data to GPS, so that software in the device can locate a coordinate in three dimensions (altitude, latitude, and longitude). It works every time and in all weather conditions. GPS was declared fully functional in 1985. GPS is used for showing a place on land, sea and air.

This tracking devices were originally developed by the U.S. Department of Defense for use in precision weapon delivery. Today, GPS tracking systems are more common to everyone. There are two kinds of GPS tracking: passive and real time. A passive GPS tracker will record travel activities and positions, which can be downloaded to a laptop. A real time GPS tracking system will show its position, real time.

Availability of better and cheaper GPS devices has lead to extensive usage of GPS devices. Smallness is another buy factor. In addition to operating from a car’s battery, a few of portable GPSs have inside rechargeable batteries that will supply the unit from 4 to 15 hours. Size and weight may also be a consideration for pedestrian use. A portable GPS can be any small portable device like a wristwatch or radio. GPS watches can be fitted with a GPS receiver, which relays a signal to a central command center equipped with GPS software systems. The system can track the position of the wearer and transmit the information. A variety of such GPS phones and wristbands are now sold in the market. They are useful to everyone.

Lates portable GPS systems have text-to-speech feature. Text-to-speech is a feature which turn a handheld GPS to speak out any street name. Most GPSs will speak an upcoming turn with a sentence like, “In point-5 miles, turn right.”

Those with text-to-speech feature can announce a turn like this: “In 400 feet turn right on Cherry Street.” Since the name of the street is announced, we don’t have to take your eyes off the road to look at the unit.

The next generation for car GPS is live traffic data that’s fed directly into your GPS to warn receiver to construction delays and accidents along your planned route and suggest detours. This summer, both Garmin and Magellan will be adding Bluetooth capabilities to their new products. Bluetooth-enabled GPSs let you make hands-free phone calls from your Bluetooth-enabled phone. Because most POIs (Point Of Interest) include phone numbers.

360 Garmin Nuvi

The 360 garmin nuvi is a favorite portable GPS among buyers posting at Amazon.com. The device itself is a thin device slightly larger than a pack of playing cards that sports a 3.5-inch touch screen and a folding out SiRFIII GPS antenna. The SiRF Star III’s TTFF (Time to First Fix) is really fast. In normal use, the GPS will keep a signal lock, but if you travel long distances or turn it off for an extended period of time, the device must reorient itself and collect that first fix on its position.

Garmin 360 navigation unit is so small and elegant compared to other portable GPS units.
Specifications :
• Dimensions: 3.87″W x 2.91″H x .87″D
• Weight: 5.1 ounces
• Screen: 2.8″W x 2.1″H; 3.5″ diag. with resolution: 320 x 240 pixels
• Screen type: QVGA color antiglare TFT with white backlight with quick touch-screen respond.
• Ultrasensitive SiRF Star III GPS receiver.
• An MP3 player, Audible Book player (subscription required), JPEG viewer, World Clock, Currency and Measurement Converters and Calculator round out the wide array of extra-curricular activities.
• Battery: rechargeable lithium-ion that Garmin claims will last up to 8 hours.
• Travel Kit is the “rest of the story” sub-menu for all kinds of cool-ness.

The Bads of Garmin 360 GPS
The Nuvi 360 GPS is nearly the equal twin brother of the popular (and less expensive) nuvi 350. The MP3 player is that it only plays MP3’s. As you might expect, the speaker sounded small. This navigation gadget has no multi-point routing

The Goods of Garmin 360 GPS
The interesting new feature that implant the 360 apart is Bluetooth hands-free calling. If your phone’s address book is compatible with Garmin’s address protocol, the 360 Garmin Nuvi will place calls directly from your phonebook.

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