This high-sensitivity, 12-parallel-channel, WAAS-enabled GPS comes with an integrated magnetic base for easy mounting. The puck-like receiver is 2.4 inches in diameter and weighs just a few ounces, making it an ideal solution for applications whThe GPS 18x 5Hz stores configuration information in nonvolatile memory so it starts up quickly each time you use it. It also has a real-time clock and raw measurement output data for sophisticated, high-precision dynamic applications. For extra precision, it offers 5 Hz Measurement Pulse Output with rising edges that align to precise 0.2 second increments of UTC time, as long as the receiver has reported a valid and accurate position during the past 4 secondsere space is at a premium.