Before you complain about “only” 300 lumens, please be aware that 300-350 lumens is considered the base for seeing at night while riding a bicycle, as opposed to just being seen; it’s really not all that bright, especially distributed across several LEDs. It certainly doesn’t hold a candle (joke maliciously intended) to my 1000 lumen bicycle lamp xD!
This amount of light isn’t much of an issue for walking/jogging speeds, but the lack of focus, total ruination of the night vision of everyone around you, and (from above) shoddy build quality doesn’t bode well…