The GMAN wrote:
https://www.trekbikes.com/us/en_US/equipment/bike-accessories/bike-lights/bike-rear-lights/trek-carback-radar-rear-bike-light/p/44797/?colorCode=black Looks like a good product and a worthy competitor to the Varia.
There is a podcast called Geek Warning on escape collective. They review it in the first 10min of the latest episode