Android USB GPS Antenna Receiver Raspberry Pi Linux Windows NMEA0183 USB GPS GLONASS GNSS Receiver UBX-M8 Chipset Chipset: M8030-KT GNSS Support: GPS GLONASS Galileo BDS SBAS QZSS Default Configuration: GPS + GLONASS + QZSS + SBAS Channels: 72 channel search Size: 49mm x 38mm x 16mm (Length x Width x Height) Weight: 65g Confirmed to work with free external GPS apps on Android smartphones, selecting u-blox to use on maps. Originally, there were no instructions. This is sold on a famous online shopping site, and everything in the photos is included.