I start with the positives, which are its price (Super), you don't even pay for the battery. The lighting is satisfactory. Although I have an older light with 28 LEDs, it is brighter (this one has 30).
In a power outage, it will do the job just fine.
When I received it, I discovered that it doesn't come with a transformer or an external power supply, only a short 80cm USB cable to DC 2.1 X 5.5mm Power Plug! We need to buy an extra power supply. (minus one star)
It is wrongly NOT stated in the specifications/description, apart from it being battery-powered. (anyway, all lights include/operate with a battery).

In its good packaging, there are no instructions/technical specifications, so we don't know which power supply to use. (another minus one star)
Since the plug is USB, we need a power supply with an output of 5 volts, but I don't know how many amperes. I assume 1 amp is enough.
The battery it contains (accessed through a door) is the well-known 18650 3.7V, but it doesn't state anything.
Based on its type, I found on another site that the battery is 1200mAh lithium.
I don't know its autonomy in case of a power outage. Luckily, its battery (18650) is very common and easy to replace.
For its price, it's worth it.