Update README.md

Author: PaulZC

README.md

@@ -30,12 +30,14 @@ The line of RTK Everywhere products offered by SparkFun all run identical firmwa
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-The [SparkFun RTK Torch](https://www.sparkfun.com/products/25662) is a centimeter-level GNSS receiver. With RTK enabled, these devices can output your location with 8mm horizontal and vertical [*accuracy*](https://docs.sparkfun.com/SparkFun_RTK_Everywhere_Firmware/accuracy_verification/) at up to 20Hz. It supports Galileo E6 HAS and has built-in tilt compensation too!
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 The [SparkFun RTK EVK](https://www.sparkfun.com/products/24342) is the perfect development platform for your fixed or mobile high-precision positioning and navigation needs. We called it the EVK (Evaluation Kit) as it truly covers all the options: L1 + L2 RTK GNSS, with L-Band correction built-in. Regarding connectivity, the SparkFun RTK EVK has it all: WiFi / Bluetooth®, Ethernet and LTE cellular!
 
+The [SparkFun RTK Facet mosaic](https://www.sparkfun.com/sparkpnt-rtk-facet-mosaic-l-band.html) is the gold standard. Featuring the mosaic-X5 GNSS module from Septentrio, the Facet mosaic can track all GNSS constellations and their current and future signals including L-Band. In the contiguous USA and with a subscription to u-blox PointPerfect, the Facet mosaic can deliver centimeter accuracy in areas with no cellular coverage and without needing corrections from a RTK Base.
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 The [SparkFun RTK Postcard](https://www.sparkfun.com/products/26916) is a scalable DIY RTK device capable of running the RTK Everywhere Firmware. The LG290P RTK module lives at the heart of the RTK Postcard providing 10mm accuracy and L1/L2/L5 reception. Add the [Portability Shield](https://www.sparkfun.com/sparkfun-portability-shield.html) to add a display, battery charging and logging.
 
+The [SparkFun RTK Torch](https://www.sparkfun.com/products/25662) is a centimeter-level GNSS receiver. With RTK enabled, these devices can output your location with 8mm horizontal and vertical [*accuracy*](https://docs.sparkfun.com/SparkFun_RTK_Everywhere_Firmware/accuracy_verification/) at up to 20Hz. It supports Galileo E6 HAS and has built-in tilt compensation too!
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 This repo houses the [RTK Product Manual](https://docs.sparkfun.com/SparkFun_RTK_Everywhere_Firmware) and the firmware that runs on the SparkFun RTK product line including:
 
 * [SparkFun RTK Torch](https://www.sparkfun.com/products/25662)