Interface Bluetooth? Version 1.2 compliant Output Power: Class 2 (10 meter in free space) Frequency: 2.4 to 2.48 GHz Power Battery: Li-Ion Charging Time: 3hrs (Typical) Operation Time: Up to 32 hrs Power Charge: Mini USB Environmental Operating: -10°C to +60°C Storage: -20°C to +60°C Charging: 0°C to +40°C Humidity: 5% to 90% non-condensing Physical Size Dimension: 46.5(W) x 72.2(L) x 20(H) mm Weight: 64g Data Log 125,000 way points. Log GPS by time interval / distance / speed limit Log GPS data by push button Others Certification: CE / FCC Comes with LED: Bluetooth, Navigation, Battery / charger status Accessory: CD, USB cable, Car charger, Quick Start Guide General GPS Chipset: MTK GPS Frequency: L1,1575.42 MHZ C/A Code: 1.023MHz chip rate Channels: 66 CH for tracking Antenna: Built-in patch with LNA Datum: WGS-84 Acquisition Rate Cold Start: 35 sec, average Warm Start: 34 sec, average Hot Start: 1.5 sec, average Reacquisition: <1sec AGPS: <1sec Accuracy (non DGPS) Position: Without aid: 3.0m; 2D-RMS DGPS:2.5m,2D-RMS Velocity: Without aid: 0.1m/s; DGPS:0.05m/s Sensitivity: -165 dBm (tracking) Dynamic Altitude: < 18,000m Velocity: < 515m/sec Acceleration: 4g Protocol GPS Output: NMEA-0183(V3.01) - GGA, GSA, GSV, RMC (default) Data bit : 8, stop bit : 1 (Default)