Good for hobby work and some other applications where location accuracy and durability are not a significant requirement. For example, it would be fine for automotive navigation purposes but not agriculture guidance. In my simple bench test, it tested at +/- 5 meter GPS accuracy on a fixed location. There is no documentation on the ‘sensors integrated R&D dynamic fusion algorithm and Kalman Filtering’ so it is unclear how that is used. Using the Kalman filtering on combined GPS/IMU data should have provided more accurate lat/long coordinates.Packaging is ok. I wish that the GPS antenna had mounting lugs or some other capability to firmly attach it to a surface (it looks like double sided tape is currently the best option, perhaps coupled with some zip ties). It does have a magnet, but I don't think that will be positive enough for my application. The TTL to USB converter that was included makes the sensor easily adapted to a PC and also allows the use of the sensor for other applications without the converter. For my application, I need the USB in a fairly rugged environment (high vibration) and will have to come up with better design (I’m thinking tape and shrink tubing, perhaps soldering the leads onto the USB converter). It would be nice if the sensor came in variations (1) a serial TTL version for those using it with an Arduino or like device, (2) a USB C connection for those using it directly with a mobile device, and (3) a molded plug USB (my specific application).It was a bit of a scavenger hunt to find the related documentation and software but it is all there; the QR code included for that purpose lead me to github and WitMotion’s websites where a bit of searching was required to find the applications specific to this sensor. The software has some quirks: (1) not all of the interface elements have English. Specifically some of the pop up messages boxes, especially when trying to connect a serial port, are in Chinese. The compass in the software will read pointing east when it is actually pointing west with north/south reading correctly. For me, magnetic calibration in a single plane worked best to achieve reasonable compass accuracy.The documentation explains how to decode the byte level serial data. It provides documentation on how to change the configuration programmatically but not how to read programmatically what the current configuration is. There are more than a few misspellings but nothing that is a show stopper.You can configure the sensor to transmit GPS data in NMEA format but no IMU data will be included.I will continue to evaluate the capabilities and plan to test machine learning on trying to improve the GPS location accuracy using n-vector conversions, GPS/IMU integration and machine learning with the intent that a relatively low-cost sensor like this could be used for applications requiring higher accuracy location.