GPS Solution:MTK MT3333, 99 Channels Frequency:GPS L1, 1575.42MHz Frequency2:GLONASS L1, 1598.0625~1605.375MHz Frequency3:GALILEO E1, 1575.42MHz (On request) Position Accuracy:Without aid: 3.0 m (50% CEP) DGPS:SBAS(defult) [QZSS,WAAS, EGNOS, MSAS,GAGAN] AGPS:Supported (Offline Mode & Host Aiding Mode) Interface:1 UART Power Supply:VCC: 3.0 V to 4.3 V,VBACKUP: 2.0 V to 4.3 V Show More