Voltaic Systems Emergency USB Led Light - Waterproof, Dimmable Brightness Levels & Touch Control, for Camping, Patio, Tool Shed or Cabin, Emergency Kit

Very useful for lighting a space. I use mine with a power bank. I like the stepless brightness control, and the memory turn on feature. It comes on with the same light level from when it went off. I bought two!

The brightness is continuously variable from full brightness down to a level more dim than you would probably ever need. I like that this light source is compact, and can be deployed in a variety of situations. Operation from USB greatly helps the versatility. My only misgiving is that the color temperature is fairly cold. This makes it useful for a task or utility light, but not as soothing to the eyes when reading, or generally relaxing in the evening. My suggestion for future products would be a version of this with a much warmer light. This is the only reason I am giving it a 4 star review. Otherwise, it seems to be a quality product.

Best USB LED light I’ve found. Tapping to dim works great. This will be a permanent addition to our tent. The only thing I would change is to swap out the case to aluminum which would help with heat dissipation.

This thing is awesome. Its small enough to carry in a pocket and still puts out an amazing amount of light. It was in the rain and worked perfect. Seems very well built and durable. You can use it as a reading light, a work light, or a light in the tent. Lots of uses. Doesn't draw a lot of power which is a huge plus. Great value for the money.

I used this with one of my solar generators. It draws 1-2 watts on high and on the lowest setting, it doesn’t even register a draw. On high, a 250wh power station (think ecoflow river) will power this for days and days. With only intermittent use at night for a couple hours camping or during an outage, the draw is so negligible it hardly impacts the power source. It can be run from usb power packs or a wall wart. For its size and very minimal draw, I’m thoroughly impressed with the brightness and long run time. It gets a little toasty on high but it dissipates heat well.