Q-1000XT: Qstarz BT-Q1000XT Bluetooth Data Logger GPS Receiver (66 ch, 1-5Hz Update Rate, AGPS, 400,000 Waypoints, Vibration Sensor) Time to First Fix (TTFF) : &lt; Average 1/33/35 sec. (Hot/Warm/Cold start) AGPS: &lt; 15 sec. Output Message : NMEA 0183 v3.01 (Default: GGA, GSA, GSV, RMC; Optional: VTG, GLL) Accuracy : Without aid: 3.0m 2D-RMS &lt;3m CEP(50%) without SA(horizontal) DGPS (WAAS, EGNOS, MSAS):2.5m Frequency: 1 - 5 Hz user configurable Dimension: 72.2 (L) X 46.5 (W) X 20 (H) mm