UPDATED: I have one slightly used "Wahoo Element Roam" GPS bike computer in like-new condition. My wife used it for about a month. It's fully functional with no problems and was never exposed to rain; she simply decided to use a different setup.
Original accessories included in addition to an adapter for a K-edge mount.
I've done a factory reset on the unit and disconnected it from my Strava, Ride With GPS, Dropbox, my phone, etc.
Some features are:
On-device navigation including color maps, turn-by-turn directions, and “Back on Track” re-routing which will get you to your destination if you veer off course.
Color screen with Gorilla Glass.
Ambient light sensor, so the screen backlight and LED lights will automatically adjust based on lighting conditions indoors and outdoors.
Battery life of up to 17 hours before needing recharge.