Some friends are confused. It is an emergency keychain flashlight that, in complete darkness, will help you get your bearings. Whether it’s a car and your keys have fallen out, or a scooter and you want to find something in the trunk, or in a sudden blackout at home when you want to find the main breaker. It is not a rescue and search flashlight and it does not have 800-1000-2000 lumens. Its construction is plastic, yes, and it doesn’t need anything more since it takes one AAA battery and if it falls, it has no weight.

Mediocre.
At 5.45, I don't think I would buy it again. The plastic body is very cheap, it is this lightweight and "dry" plastic. It doesn't inspire confidence that it will withstand a fall. The lens is "wrapped" in soft plastic/rubber, as is the back piece.
I like the beam for what it is, it's not powerful, it's for inside the house or for going down a small path in the village.
Anyway, all of these things are probably found in many similar cheap lenses.

For the money, very good to have it on your keys instead of searching for your phone. It doesn't get damaged.

Average lens, but excellent for its price. Very durable and does what it is intended for.
The chain is useless. Remove it and attach it directly to your keys.

It is very small, about 4cm, and fits everywhere. It does not have an on/off button, but it turns on by twisting the head, which comes off to insert the battery. It takes one 3A battery inside the body.
Be careful, if you want to have it turned off, twist it 2-3 more times after the first time it turns off so that it doesn't accidentally turn on. It is ideal for the car, but also if you find yourself in a dark place and lose something, you can find it.

Good construction, economical. I just removed the chain and attached it directly to the ring for added safety! Otherwise, it's a fantastic little lens

Super lightweight for keys, waterproof (rain), sturdy with a wide beam +10 m and good price. I've had it for about a year, using it occasionally, and it still lights up like initially! And let me tell you a trick. Buy a fabric elastic band about 50 cm long from stores that sell sewing supplies, buttons, etc., preferably black. Thread it through the keychain, and like a ribbon, measure it around your head, not too tight. Tie a knot. Cut off any excess from the knot. Wrap it crisscross around your flashlight, so you always have it with you. So, in case you need to use the flashlight and have your hands free, take off the elastic band, put it around your head, pass the flashlight inside the band to touch your ear (it won't fall off), and hold it with the initial keychain. It can also be adjusted to fit a hat or a cap. And there you have it, guys, a headlamp that you can also hang around your neck.