I agree, the Yuji has about a 3’ maximum working range and works well indoors as a hatlamp to illuminate things in my hands, and while sitting at a table.
It will only illuminate one step in from of my feet if I hold the light pointed down with my arm hanging at my side.
I dont consider it an outdoor light, and I was surprised that you tried to use it for a nightwalk.
These are floody beams, and less than 10 lumens, with almost no hotspot. They work really well to illuminate things 10 inches away, and the lack of hotspot means the illumination is even and has no glare or overexposed hotspot when taking close up photos, for example.
For outdoor use, I need a light with a hotspot, and more lumens. The C01 works great inside a car, where a hotspot is less useful imo. And the C01 works great inside my house, when I wake to use the bathroom, in fact it is brighter than necessary, when I wake up in the dark. But its essentially useless during the day, or in situations with strong ambient light, beyond about 6” away.
The C01 is useful for reading labels on packages at the grocery store, if I hold the light about 2-4” away. And is also good for senior citizens like myself to read a menu in a restaurant, without blinding the other people at the table, because the beam circle is nice and small, about 3” diameter, when the light is held within a couple of inches of the menu.
The C01 a good close up light, for looking for something inside a bag, pack, purse, cabinet, box. 
The Yuji LED is not a thrower. The Fenix throws more, but it is low CRI, and has a small, odd shaped, purple hotspot…
