Feature:1. Built-in backup battery, long use time2. Built-in high gain LNA, dual LDO3. Adopting PCB gold-sinking process to radiate GPS signal over a large area, the signal is better and more stable4. VK172 automatically adapts to the baud rate, supports data output at any baud rate5. With optional baud rate 4800 (not recommended), 9600 (recommended), 19200, 38400, 5700, 115200 and other speeds, it makes your use of this product easierSpecification:Item Type: External GPS ModuleSupport Operating System: for win10 for win8 for win7 for winXP (for CE, for Android system needs to develop its own driver, no additional support)UB-172 automatically adapts to the baud rate, supports data output at any baud rateSupport for Google EarthModel: VK172C / A code, 1.023MHz code streamReceiving Frequency Band: L1 (1575.42MHz)Tracking Channels: 56Support DGPS (WAAS, EGNOS and MSAS)(Built-in button battery, LR44, 160mAh)Positioning Performance: 2D Plane: 5m(average)2D Plane: 3.5m (average), with DGPS assistance.Drift: <0.02m / sTiming Accuracy: 1usReference Coordinate System: WGS-84Maximum Altitude: 18000 metersMaximum Speed: 500m / sAcceleration: <4gElectrical Performance: Tracking Sensitivity: -162dBmCapture Sensitivity: -160dBmCold Start Time: 29s(average)Warm Start Time: 28s(average)Hot Start Time: 1s(average)Recapture Time: 0.1s(average)Operating Temperature: -30 to + 80.Package List:1 x USB GPS ReceiverNote:1. The original driver provided by the chip is developed in accordance with USB1.1 and 2.0. If the USB3.0 port has compatibility problems, please add a USB HUB hub before use!2. Only sells GPS module hardware! Drivers for windows only