I bought this as a solution for an area (the stairs) of our house where my wife goes up and down several times a day, working from home in her upstairs office.We have no lighting and no electrical outlets available in the stairs, so it's unsafe for her to make her way up and down those stairs for the first few hours each morning (she normally starts work just before 7:00AM), so I at first had her use a small flashlight to carry with her for that.I must confess that I was rather mad at myself for not thinking sooner of a rechargeable light that can be attached to the wall with a magnetic strip when I stumbled upon this device.What you get in the box are ten items: 1) two rechargeable light units, 2) two magnetic strips, 3) four double-sided adhesive strips, 4) USB-C charging cable, 5) printed instruction sheetThe first thing to do with this is (of course) to plug the cable into a USB port or USB charging power supply, then into whichever light unit you intend to install.The LED charging indicator on the light unit will be red until fully charged, then the LED will switch to green.You wil next need to put two of the double-sided adhesive strips on one side of the metal mounting strip, but first be sure to peal off the clear plastic protective cover on the side you intend to attach the adhesive strip to.This is the one small reason why I didn't give this five stars, because I found it very difficult to pull the backing tape off of the other side of the adhesive strips, so much so that it took me nearly five minutes with each of the two strips getting that off so that I could put the metal strip on the wall in the stairs.With that said, once I was able to get that backing tape, the strip attached very securely on the wall.The light unit then stays firmly on the metal strip thanks to the strong magnetics on the back the light unit.Once it was attached, I was pleased to say that the motion detector that automatically activates the light is sensitive enough to come on as soon as anyone comes within about ten feet, then it stays on for roughly ten seconds after the person going by is beyond its motion detector, a good compromise for the shutoff delay.Another nice design feature of this light is that it will not activate with enough daylight for anyone to not need the light, as it is later in the day; so that feature helps conserve battery charge.Finally, there is a three-position sliding switch at the same end where the charging port is to control how the light operates, with each labeled position working as follows:G = normal motion detector operation enabledOFF = light will not come on at allON = light stays on constantlyProbably most people won't use this switch except to put the switch in the "OFF" position for those occasions when taking it down to charge it so that the light doesn't switch on while charging.As far as the brightness goes, this is more than adequate, and my wife loves not having to tote a flashlight around any longer.This works very well, so I don't hesitate to recommend it to anyone with a similar lighting need.