The description says it has solid and pulsing modes - does it even have a RVLR-compliant (=road-legal) flashing mode?
Also, it says it's bright enough to see your way home, but 110 lumens puts it in the same ballpark as my 20-year-old lamp that uses a very good lens to get 20 lux from 120 lumens, which is only good for a fairly relaxed ride home IMO.