ZED-F9P-01B module Multi-band receiver delivers centimeter-level accuracy in seconds Concurrent reception of GPS, GLONASS, and BeiDou Multi-band RTK with fast convergence times and reliable performance High update rate for highly dynamic applications Centimeter accuracy in a small and energy-efficient module Easy integration of RTK for fast time-to-market Supported RTCM3.3 message, can be configured as a Base station or Colour: As Shown Material: PC+metal Package Contents: 2 x RTK GPS GNSS Module(label random, don't accept the specified) 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.