Stop wondering how fast your RC car can run and how high your RC Airplane or helicopter can fly Now all these data come at your finger with the GNSS SPEED METER by SkyRC This gadget is ideal for RC racing flying and casual biking driving and long journey The user could easily view the screen while working out data such as speed altitude total mileage kilometer longitude latitude It also records the top speed and top altitude for instant recall after the running and helps RC fans much to fine tune their RC gadgets to achieve better performance Feature 1 Measure Top Speed Average Speed and Top Altitude 2 Concurrent reception of GPSGLONASS 3 GNSS Coordinator 4 Update frequency up to 10Hz 5 Built in 1M flash recording time 2 hours 6 UTC timestamp logged for each track point 7 Built in rechargeable LiPo battery 200mAh Operating time 150minutes 8 Switch between Metric and Imperial system of Measurement 9 GNSS LOGGER software for device management and data loggingon Bing Maps 10 Firmware upgradeable Specification Concurrent reception of GPSGLONASS Receiver L1 1575 42 MHZ Update frequency 10 Hz Antenna type Built in Satellite signal reception sensitivity 167dBmDimensions 65 7X39 6X20 8mm Weight 45g Operating temperature 0℃ to 40℃ Storage temperature 10℃ to 70℃ Operating humidety 5 to 90 Package Included 1 X SKYRC GSM 015 GNSS Speed Meter