Standard 25 x 25 x 4MM high sensitivity GPS antennaTTL interfaceAdopt KDS 0.5 High Precision TCXOBuilt-in SQI FlashBuilt-in crystal and Picofarads capacitance.faster hot Built-in LNA,Low-noise amplifier1-10HzSupport AssistNow Online and AssistNow OfflineGPS,GLONASS,GALILEO,SBAS(WAAS,EGNOS,MSAS,GAGAN) Hybrid EngineFeatures:Chip:UBX-G7020-KTC/A code,1.023MHz receive frequency:L1 [1575.42MHz]receive channel:56CHS11 SWR:1.3S11 :50Ohm+(-)5%S21 Log :20.0dBS22 SWR:1.3 Location Performance:Less than 2.5m[Autonomous][50%]Less than 2m[SBAS]rate:Less than 0.1m/sdirection:Less than 0.5 DegreesTiming accuracy:30nsReference coordinate system:-84Maximum altitude:50,000 mAcceleration:Less than 4g sensitivity:-162dBmcatch sensitivity:-160dBm time:29s (in average)warm time:28s(in average)hot time:1s(in average)AGPS:3s color:BlueMaterial:PC+metalPackage Contents:1 x GPS Module(VK2828U8G5LF)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.