https://bikerumor.com/trek-enters-th...ck-bike-radar/
Same price as the Varia.
240m sight distance vs Varia's 140m
Usb-c charging.
No mention of run time in the various light modes.
Trek specifically says it will improve the user experience vs Garmin Varia. I have a Varia and can't say I have ever been frustrated with it.
The Usb-c is nice compared to my Garmin. And this Trek model oicks cars up from 100m further away, but I am unsure if that is actually a valuable feature.