Lightweight and small lens with the ability to focus the front lens... It has 3 functions: continuous lighting of the front lens, then with a second press of the back button, the front lens flashes, and with a third press, the side light turns on. Overall, it is a good lens and you can see very well with it, and it fits almost anywhere. But... While it looks nice on the outside, it is not at all something of high quality on the inside. I would say it is a one-time use lens for as long as the Chinese 14500 lithium internal battery lasts, which unfortunately cannot be replaced. But for its cost... okay... Inside the box, it has a lens, a cord, and a charging cable. It also heats up during use... I don't know if this is a good thing... I suspect it may be a battery wear issue.

Update...
The above-mentioned lithium battery is supposed to have a capacity of 1100mAh... The specific Chinese integrated battery that the lens has has dropped to half the capacity and below after 6 months... But I suppose with the cost it has, it is a one-time use product and it lasts as long as it can.

I have bought 3 of these (3 euros each)... The light is quite powerful for its price... The color of the light is bluish and of poor quality (we don't care about the price)... There is a very serious problem that might concern us... Its battery is completely unacceptable. I thought I got a defective one, so I bought more to make sure, that's why I have 3 pieces. (They are not wasted, I have them in different places at home, in the car, etc., where I will need a flashlight). You might say, "What do you expect for 2-3 euros, to make you coffee?"... Let me tell you what I want... If the Chinese guy was smart, he would have put a much better battery (which they find very cheap in quantities) and would have sold it to me for 1-2 euros more... and it would have had a brand name as the most value for money flashlight... so sorry, it loses 1 star for the battery because it is useless. I have a Nitecore Tiki, which is as big as half of our finger, and its battery is tiny. Nevertheless, it is 1,000 times better than this one... so it takes up less space and could have a better battery with more mAh... So, to conclude, if you want a flashlight that you can turn on for a few seconds to see something, then don't think about it... if you want a flashlight that can stay on for a long time with good run times, forget about it... spend more and get something worthwhile