Backup battery support for faster position fix LED for position fix indication USB communication protocol support : VistaXP, CE Windows10 USB GPS GLONASS GNSS driver and test star software, can be downloaded from our server. (we have more than one version of the test software can choose) Features: Multi-satellite positioning systems support GPS/QZSS/GLONASS(GN-803G) GPS/QZSS/Beidou (GN-803B) Based on u-blox8 low power single chip Sensitivity Acquisition: -148dBm Tracking: -167dBm Low power: 40mA at continuous tracking SBAS (WAAS, EGNOS, MSAS) support Higher update rate option (default 1Hz) RTCM 2.3 support A-GPS support, OMA SUPL/3GPP TS25.171 (GSM/UMTS) compliant Easy to use: built-in patch antenna & 6-pin wire to board connector with pitch of 1.25mm NOTE: With the words "G.receiver" Material: plastic colour: Black Package Contents: 2 x receiver module 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.